1919
- February 26 - An act of the United States Congress establishes most of the Grand Canyon as a United States National Park
- April 13 - At the Amritsar Massacre, British and Gurkha troops massacre 379 Indians
- May 23 - The University of California opens its second campus in Los Angeles
- May 29 - Einstein's theory of general relativity is tested/confirmed
- June 28 - The Treaty of Versailles is signed, ending World War I
1922
- February 28 - The United Kingdom accepts the independence of Egypt.
- March 18 - In India, Mohandas Gandhi is sentenced to six years in prison for sedition. He would serve only two years.
- November 14 - The British Broadcasting Corporation (BBC) begins radio service in the United Kingdom.
1923
- March 2 - Time Magazine hits newsstands for the first time.
1924
- February 4 - Mohandas Gandhi is released prematurely on medical grounds.
- February 14 - IBM corporation founded.
- Adolf Hitler begins dictating his book, Mein Kampf (or in English, My Struggle), while imprisoned in Bavaria.
- May 11 - Mercedes-Benz formed by the merging companies owned by Gottlieb Daimler and Karl Benz.
1925
- January 3 - Benito Mussolini (Il Duce) announces he is taking dictatorial powers over Italy.
- February 21 - The New Yorker magazine publishes its first issue.
- July 18 - Adolf Hitler publishes his personal manifesto Mein Kampf.
- October 30 - John Logie Baird creates Britain's first television transmitter.
- December 26 - The Sphinx was finally dug out in 1925, to the great pleasure of its numerous visitors.
1926
- November 11 - U.S. Route 66 was established.
1927
- January 7 - First transatlantic telephone call is made: New York City to London.
- April 7 - Bell Telephone Co. transmits an image of Commerce Secretary Hoover which becomes the first successful long distance demonstration of television.
- May 20 - Saudi Arabia becomes independent of the United Kingdom
1928
- November 6 - U.S. presidential election, 1928: Republican Herbert Hoover wins by a wide margin over Democrat Alfred E. Smith.
- December 21 - U.S. Congress approves the construction of The Boulder Dam, later renamed The Hoover Dam
- World population reached 2 billion people
1929
- January 2 - Canada and the United States agree on a plan to preserve Niagara Falls.
- January 10 - Tintin, a comic book character created by Hergé, makes his debut.
- February 18 - First Academy Awards are announced.
- February 26 - The Grand Teton National Park is established by Congress
- March 4 - Herbert Hoover is inaugurated as the 31st President of the United States, succeeding Calvin Coolidge.
- October 24 - The start of the Black Thursday stock market crash on the New York Stock Exchange
- October 29 - Black Tuesday stock market crash on the New York Stock Exchange
1930
January 26 - The Indian National Congress declares 26th January as Independence Day or as the day for Poorna Swaraj (Complete Independence).
March 2 - Mahatma Gandhi informs British viceroy of India that civil disobedience would begin nine days later
May 4/May 5 - Mahatma Gandhi is arrested again.
December 28 - Mohandas Gandhi leaves for Britain for negotiations.
December 29 - Sir Muhammad Iqbal's presidential address in Allahabad introduces the Two-Nation Theory and outlines a vision for the creation of Pakistan.
1931
January 25 - Mohandas Gandhi released again.
February 10 - New Delhi becomes the capital of India.
February 20 - California gets the go-ahead by the U.S. Congress to build the San Francisco-Oakland Bay Bridge.
March 4 - British viceroy of India and Mohandas Gandhi negotiate.
March 23 - Revolt for Independent India leaders Bhagat Singh, Rajguru and Sukhdev are hanged by the British Government.
May 1 - Construction of the Empire State Building is completed in New York City.
1932
1933
January 5 - Construction of the Golden Gate Bridge begins in San Francisco Bay.
January 28 - The word Pakistan for the first time in history comes into being and is recognized by the Pakistan Movement to press for freedom.
March 2 - The original film version of King Kong
March 4 - American President Herbert Clark Hoover is succeeded by Franklin D. Roosevelt, who in reference to the Great Depression, gives his "The only thing we have to fear, is fear itself" inauguration speech
March 12 - Great Depression: Franklin Delano Roosevelt addresses the nation for the first time as President of the United States. This was also the first of his "Fireside Chats".
May 8 - Mohandas Gandhi begins a 3-week hunger strike because of the mistreatment of the lower castes
May 18 - New Deal: President Franklin Delano Roosevelt signs an act creating the Tennessee Valley Authority.
June 5 - The U.S. Congress abrogates the United States' use of the gold standard by enacting a joint resolution (48 Stat. 112) nullifying the right of creditors to demand payment in gold.
October 17 - Albert Einstein arrives in the United States as a refugee from Nazi Germany.
November 8 - Great Depression: New Deal - US President Franklin D. Roosevelt unveils the Civil Works Administration, an organization designed to create jobs for more than 4 million of the unemployed.
1934
June 6 - New Deal: U.S. President Franklin D. Roosevelt signs the Securities Exchange Act into law, establishing the U.S. Securities and Exchange Commission.
December 27 - Persia becomes Iran
1935
March 16 - Adolf Hitler announces German rearmament in violation of the Versailles Treaty.
May 6 - New Deal: Executive Order 7034 creates the Works Progress Administration
August 14 - United States President Franklin Roosevelt signs Social Security Act into law.
September 30 - U.S. President Franklin D. Roosevelt dedicates Hoover Dam
1936
March 7 - In violation of the Treaty of Versailles, Nazi Germany reoccupies the Rhineland.
May 12 - The Santa Fe railroad in the United States inaugurates the all-Pullman Super Chief passenger train between Chicago, Illinois and Los Angeles, California.
November 3 - U.S. presidential election, 1936: Franklin D. Roosevelt is reelected to a second term in a landslide victory over Alf Landon.
November 12 - In California, the San Francisco-Oakland Bay Bridge opens to traffic.
1937
January 20 - Chief Justice Charles Evans Hughes swears in US. President Franklin D. Roosevelt for a second term. This is the first time Inauguration Day in the United States occurred on that date. It has occurred on January 20 ever since.
February 5 - President Franklin D. Roosevelt proposes a plan to enlarge the Supreme Court of the United States
May 27 - In California, the Golden Gate Bridge opens to pedestrian traffic creating a vital link between San Francisco and Marin County. The next day, President Franklin D. Roosevelt pushes a button in Washington, DC signaling the start of vehicle traffic over the Golden Gate Bridge.
July 22 - New Deal: The United States Senate votes down President Franklin D. Roosevelt's proposal to add more justices to the Supreme Court of the United States.
1938
January 27 - The Niagara Bridge at Niagara Falls, New York collapses due to an ice jam.
March 3 - Oil is discovered in Saudi Arabia.
February 24 - A nylon bristle toothbrush becomes the first commercial product to be made with nylon yarn.
October 16 - Winston Churchill, in a broadcast address to the United States, condemns the Munich Agreement as a defeat and calls upon America and western Europe to prepare for armed resistance against Hitler.
October 31 - Great Depression: In an effort to try restore investor confidence, the New York Stock Exchange unveils a fifteen-point program aimed to upgrade protection for the investing public.
1939
January 1 - The Hewlett-Packard Company was founded.
July 6 - Holocaust: The last remaining Jewish enterprises in Germany are closed
August 2 - Albert Einstein writes President Franklin Roosevelt about developing the Atomic Bomb using Uranium. This led to the creation of the Manhattan Project.
September 1 - WWII: Nazi Germany invades Poland, beginning the Second World War in Europe.'
October 11 - Manhattan Project: US President Franklin D. Roosevelt is presented with a letter signed by Albert Einstein urging the United States to rapidly develop the atomic bomb.
December 2 - La Guardia Airport opens for business in New York City.
Nuclear fission discovered independently by Lise Meitner and Otto Hahn.
1940
May 15 - McDonald's founded.
November 5 - U.S. presidential election, 1940: Democrat incumbent Franklin D. Roosevelt defeats Republican challenger Wendell Willkie and becomes the United States' first third-term president.
December 29 - Franklin D. Roosevelt, in a fireside chat to the nation, declares that the United States must become, "... the great arsenal of democracy."
December 30 - California's first modern freeway, the future California State Route 110, is opened to traffic in Pasadena, California, as the Arroyo Seco Parkway. It is now called the Pasadena Freeway.
1941
January 6 - Franklin Delano Roosevelt delivers his Four Freedoms Speech in the State of the Union Address.
November 17 - WWII: Attack on Pearl Harbor - Joseph Grew, the United States ambassador to Japan, cables the State Department that Japan had plans to launch an attack against Pearl Harbor, Hawaii (his cable was ignored).
December 7, December 8 (in Japan standard time) - Japanese Navy launches a surprise attack consisting of two full regiments on the United States fleet at Pearl Harbor, thus drawing the United States into World War II.
1942
February 9 - Daylight saving time goes into effect in the United States.
October 16 - Hurricane and flooding in Bombay - 40,000 dead.
1943
1944
WWII in full flow
1945
January 20 - Franklin D. Roosevelt is inaugurated to an unprecedented fourth term as President of the United States.
March 1 - Franklin D. Roosevelt gives what will be his last address to a joint session of Congress, reporting on the Yalta Conference
April 12 - United States President Franklin Delano Roosevelt (1933-1945) dies suddenly at Warm Springs, Georgia; Vice President Harry S. Truman (1945-1953) becomes the 33rd President.
May 2 - WWII: The Soviet Union announces the fall of Berlin.
July 21 - WWII: Harry S. Truman approves order for atomic bombs to be used.
September 2 - World War II ends: The final official surrender of Japan
October 24 - United Nations founded.
November 16 - Cold War: The United States controversially imports 88 German scientists to help in the production of rocket technology.
December 27 - Twenty-eight nations sign an agreement creating the World Bank.
1947
July 26 - Cold War: U.S. President Harry S. Truman signs the National Security Act into United States law creating the Central Intelligence Agency, Department of Defense, Joint Chiefs of Staff, and the National Security Council.
July 29 - After being shut off on November 9, 1946 for a refurbishment, ENIAC, one of the world's first digital computers, is turned on after a memory upgrade. It will remain in continuous operation until October 2, 1955.
August 15 - Following decades of Non violent resistance and periodic civil unrest from 1919, India gains independence from the British Empire
November 29 - The United Nations General Assembly votes to partition Palestine between Arabs and Jews.
1948
May 15 - 1948 Arab-Israeli War: Egypt, Transjordan, Lebanon, Syria, Iraq and Saudi Arabia attack Israel.
June 3 - Palomar Observatory telescope finished in California.
September 12 - Invasion of the State of Hyderabad by the Indian Army on the day after the Pakistani leader Jinnah's death to assist damage control. Operation Polo led to the deaths of an estimated tens of thousands of Hyderabadi Muslims.
1949
April 1 - The Tokyo Stock Exchange is founded.
October 1 - Birth of the People's Republic of China.
1950
January 26 - India promulgates its constitution forming a republic and Rajendra Prasad is sworn in as its first president.
February 12 - Albert Einstein warns that nuclear war could lead to mutual destruction
March 17 - University of California, Berkeley researchers announce the creation of element 98 which they have named "californium".
1952
May 13 - Pandit Nehru forms his first government
1953
January 7 - President Harry S. Truman announces the United States has developed a hydrogen bomb.
January 20 - Change of US presidency from Harry S. Truman (1945-1953) to Dwight D. Eisenhower (1953-1961).
August 8 - Soviet prime minister Georgi Malenkov announces that Soviet Union has a hydrogen bomb
October 30 - Cold War: US President Dwight D. Eisenhower formally approves the top secret document National Security Council Paper No. 162/2, which states that the United States' arsenal of nuclear weapons must be maintained and expanded to counter the communist threat.
1954
November 23 - The Dow Jones Industrial Average rises 3.27 points, or 0.86%, closing at an all-time high of 382.74. More significantly, this is the first time the Dow has surpassed its 1929 peak level reached just before that year's crash.
1956
October 31 - Suez Crisis: The United Kingdom and France begin bombing Egypt to force the reopening of the Suez Canal
1957
January 2 - San Francisco and Los Angeles stock exchanges merge to form Pacific Coast Stock Exchange.
January 20 - Dwight D. Eisenhower inaugurated for second term as President of the United States.
March 7 - Congress approves the Eisenhower Doctrine.
March 8 - Egypt re-opens the Suez Canal
March 25 - Treaty of Rome (patto di Roma) establishes the European Economic Community (EEC); see EU.
April 12 - United Kingdom announces that Singapore will gain self rule January 1, 1958.
July 29 - The International Atomic Energy Agency is established.
October 4 - Sputnik program: The Soviet Union launches Sputnik I, the first artificial satellite to orbit the earth.
October 31 - Toyota begins exporting vehicles to the U.S
December 6 - First U.S. attempt to launch a satellite fails, the rocket blowing up on the launch pad
1958
January 31 - The first successful American satellite, Explorer I, is launched into orbit.
February 1 - Egypt and Syria unite to form the United Arab Republic.
March 11 - U.S. B-47 bomber accidentally drops an atom bomb on Mars Bluff, South Carolina.
October 1 - NASA starts operations and replaces the NACA.
1959
February 19 - The United Kingdom grants Cyprus its independence.
1960
February 11 - Twelve Indian soldiers die in clashes with Chinese troops at their common border.
February 13 — Nuclear testing: France tests its first atomic bomb in the Sahara.
March 6 - Vietnam War: The United States announces that 3,500 American soldiers will be sent to Vietnam.
August 19 - Sputnik program: The Soviet Union launches Sputnik 5, with the dogs Belka and Strelka (Russian for "Squirrel" and "Little Arrow"), 40 mice, 2 rats and a variety of plants. The spacecraft returns to earth the next day and all animals are recovered safely
November 8 — United States presidential election, 1960: In a close race, John F. Kennedy is elected over Richard M. Nixon, becoming the youngest man elected to that office.
World population: 3,021,475,000
1961
January 20 - John F. Kennedy becomes the 35th President of the United States.
June 25 - Iraqi president Abdul Karim Kassem announces he is going to annex Kuwait.
October 30 - Nuclear testing: The Soviet Union detonates a 58 megaton yield hydrogen bomb known as Tsar Bomba over Novaya Zemlya. It remains the largest ever (man-made) explosion.
November 18 - U.S. President John F. Kennedy sends 18,000 military advisors to South Vietnam.
December 11 - The Vietnam War officially begins, as the first American helicopters arrive in Saigon along with 400 U.S. personnel.
December 17 - India occupies Goa.
December 31 - The Marshall Plan expires, after having distributed more than $12 billion in foreign aid to rebuild Europe.
1962
January 4 - New York City introduces a subway train that operates without a crew on board.
January 9 - Cuba and the Soviet Union sign a trade pact.
February 3 - The U.S. announces its trade embargo against Cuba.
September 21 - A border conflict between China and India erupts into fighting.
October 14 - Cuban Missile Crisis begins: A U-2 flight over Cuba takes photos of Soviet nuclear weapons being installed. A stand-off then ensues the next day between the United States and the Soviet Union, threatening the world with nuclear war.
November 1 - The Soviets begin dismantling their missiles in Cuba.
1971
August 15 - President Richard Nixon announces that the United States will no longer convert dollars to gold at a fixed value, effectively ending the Bretton Woods system. He also imposes a 90-day freeze on wages, prices and rents.
November 15 - Intel releases the world's first microprocessor, the Intel 4004.
December 18 - The U.S. dollar is devalued for the second time in U.S. history.
1973
February 13 - The United States Dollar was devalued by 10%.
March 29 - The last United States soldier leaves Vietnam.
October 17 - The Arab Oil Embargo against several countries which support Israel triggers the 1973 energy crisis.
December 23 - OPEC doubles the price of crude oil
1974
March 18 - Oil embargo crisis: Most OPEC nations end a 5-month oil embargo against the United States, Europe and Japan
January 26 - The Indian National Congress declares 26th January as Independence Day or as the day for Poorna Swaraj (Complete Independence).
March 2 - Mahatma Gandhi informs British viceroy of India that civil disobedience would begin nine days later
May 4/May 5 - Mahatma Gandhi is arrested again.
December 28 - Mohandas Gandhi leaves for Britain for negotiations.
December 29 - Sir Muhammad Iqbal's presidential address in Allahabad introduces the Two-Nation Theory and outlines a vision for the creation of Pakistan.
1931
January 25 - Mohandas Gandhi released again.
February 10 - New Delhi becomes the capital of India.
February 20 - California gets the go-ahead by the U.S. Congress to build the San Francisco-Oakland Bay Bridge.
March 4 - British viceroy of India and Mohandas Gandhi negotiate.
March 23 - Revolt for Independent India leaders Bhagat Singh, Rajguru and Sukhdev are hanged by the British Government.
May 1 - Construction of the Empire State Building is completed in New York City.
1932
1933
January 5 - Construction of the Golden Gate Bridge begins in San Francisco Bay.
January 28 - The word Pakistan for the first time in history comes into being and is recognized by the Pakistan Movement to press for freedom.
March 2 - The original film version of King Kong
March 4 - American President Herbert Clark Hoover is succeeded by Franklin D. Roosevelt, who in reference to the Great Depression, gives his "The only thing we have to fear, is fear itself" inauguration speech
March 12 - Great Depression: Franklin Delano Roosevelt addresses the nation for the first time as President of the United States. This was also the first of his "Fireside Chats".
May 8 - Mohandas Gandhi begins a 3-week hunger strike because of the mistreatment of the lower castes
May 18 - New Deal: President Franklin Delano Roosevelt signs an act creating the Tennessee Valley Authority.
June 5 - The U.S. Congress abrogates the United States' use of the gold standard by enacting a joint resolution (48 Stat. 112) nullifying the right of creditors to demand payment in gold.
October 17 - Albert Einstein arrives in the United States as a refugee from Nazi Germany.
November 8 - Great Depression: New Deal - US President Franklin D. Roosevelt unveils the Civil Works Administration, an organization designed to create jobs for more than 4 million of the unemployed.
1934
June 6 - New Deal: U.S. President Franklin D. Roosevelt signs the Securities Exchange Act into law, establishing the U.S. Securities and Exchange Commission.
December 27 - Persia becomes Iran
1935
March 16 - Adolf Hitler announces German rearmament in violation of the Versailles Treaty.
May 6 - New Deal: Executive Order 7034 creates the Works Progress Administration
August 14 - United States President Franklin Roosevelt signs Social Security Act into law.
September 30 - U.S. President Franklin D. Roosevelt dedicates Hoover Dam
1936
March 7 - In violation of the Treaty of Versailles, Nazi Germany reoccupies the Rhineland.
May 12 - The Santa Fe railroad in the United States inaugurates the all-Pullman Super Chief passenger train between Chicago, Illinois and Los Angeles, California.
November 3 - U.S. presidential election, 1936: Franklin D. Roosevelt is reelected to a second term in a landslide victory over Alf Landon.
November 12 - In California, the San Francisco-Oakland Bay Bridge opens to traffic.
1937
January 20 - Chief Justice Charles Evans Hughes swears in US. President Franklin D. Roosevelt for a second term. This is the first time Inauguration Day in the United States occurred on that date. It has occurred on January 20 ever since.
February 5 - President Franklin D. Roosevelt proposes a plan to enlarge the Supreme Court of the United States
May 27 - In California, the Golden Gate Bridge opens to pedestrian traffic creating a vital link between San Francisco and Marin County. The next day, President Franklin D. Roosevelt pushes a button in Washington, DC signaling the start of vehicle traffic over the Golden Gate Bridge.
July 22 - New Deal: The United States Senate votes down President Franklin D. Roosevelt's proposal to add more justices to the Supreme Court of the United States.
1938
January 27 - The Niagara Bridge at Niagara Falls, New York collapses due to an ice jam.
March 3 - Oil is discovered in Saudi Arabia.
February 24 - A nylon bristle toothbrush becomes the first commercial product to be made with nylon yarn.
October 16 - Winston Churchill, in a broadcast address to the United States, condemns the Munich Agreement as a defeat and calls upon America and western Europe to prepare for armed resistance against Hitler.
October 31 - Great Depression: In an effort to try restore investor confidence, the New York Stock Exchange unveils a fifteen-point program aimed to upgrade protection for the investing public.
1939
January 1 - The Hewlett-Packard Company was founded.
July 6 - Holocaust: The last remaining Jewish enterprises in Germany are closed
August 2 - Albert Einstein writes President Franklin Roosevelt about developing the Atomic Bomb using Uranium. This led to the creation of the Manhattan Project.
September 1 - WWII: Nazi Germany invades Poland, beginning the Second World War in Europe.'
October 11 - Manhattan Project: US President Franklin D. Roosevelt is presented with a letter signed by Albert Einstein urging the United States to rapidly develop the atomic bomb.
December 2 - La Guardia Airport opens for business in New York City.
Nuclear fission discovered independently by Lise Meitner and Otto Hahn.
1940
May 15 - McDonald's founded.
November 5 - U.S. presidential election, 1940: Democrat incumbent Franklin D. Roosevelt defeats Republican challenger Wendell Willkie and becomes the United States' first third-term president.
December 29 - Franklin D. Roosevelt, in a fireside chat to the nation, declares that the United States must become, "... the great arsenal of democracy."
December 30 - California's first modern freeway, the future California State Route 110, is opened to traffic in Pasadena, California, as the Arroyo Seco Parkway. It is now called the Pasadena Freeway.
1941
January 6 - Franklin Delano Roosevelt delivers his Four Freedoms Speech in the State of the Union Address.
November 17 - WWII: Attack on Pearl Harbor - Joseph Grew, the United States ambassador to Japan, cables the State Department that Japan had plans to launch an attack against Pearl Harbor, Hawaii (his cable was ignored).
December 7, December 8 (in Japan standard time) - Japanese Navy launches a surprise attack consisting of two full regiments on the United States fleet at Pearl Harbor, thus drawing the United States into World War II.
1942
February 9 - Daylight saving time goes into effect in the United States.
October 16 - Hurricane and flooding in Bombay - 40,000 dead.
1943
1944
WWII in full flow
1945
January 20 - Franklin D. Roosevelt is inaugurated to an unprecedented fourth term as President of the United States.
March 1 - Franklin D. Roosevelt gives what will be his last address to a joint session of Congress, reporting on the Yalta Conference
April 12 - United States President Franklin Delano Roosevelt (1933-1945) dies suddenly at Warm Springs, Georgia; Vice President Harry S. Truman (1945-1953) becomes the 33rd President.
May 2 - WWII: The Soviet Union announces the fall of Berlin.
July 21 - WWII: Harry S. Truman approves order for atomic bombs to be used.
September 2 - World War II ends: The final official surrender of Japan
October 24 - United Nations founded.
November 16 - Cold War: The United States controversially imports 88 German scientists to help in the production of rocket technology.
December 27 - Twenty-eight nations sign an agreement creating the World Bank.
1947
July 26 - Cold War: U.S. President Harry S. Truman signs the National Security Act into United States law creating the Central Intelligence Agency, Department of Defense, Joint Chiefs of Staff, and the National Security Council.
July 29 - After being shut off on November 9, 1946 for a refurbishment, ENIAC, one of the world's first digital computers, is turned on after a memory upgrade. It will remain in continuous operation until October 2, 1955.
August 15 - Following decades of Non violent resistance and periodic civil unrest from 1919, India gains independence from the British Empire
November 29 - The United Nations General Assembly votes to partition Palestine between Arabs and Jews.
1948
May 15 - 1948 Arab-Israeli War: Egypt, Transjordan, Lebanon, Syria, Iraq and Saudi Arabia attack Israel.
June 3 - Palomar Observatory telescope finished in California.
September 12 - Invasion of the State of Hyderabad by the Indian Army on the day after the Pakistani leader Jinnah's death to assist damage control. Operation Polo led to the deaths of an estimated tens of thousands of Hyderabadi Muslims.
1949
April 1 - The Tokyo Stock Exchange is founded.
October 1 - Birth of the People's Republic of China.
1950
January 26 - India promulgates its constitution forming a republic and Rajendra Prasad is sworn in as its first president.
February 12 - Albert Einstein warns that nuclear war could lead to mutual destruction
March 17 - University of California, Berkeley researchers announce the creation of element 98 which they have named "californium".
1952
May 13 - Pandit Nehru forms his first government
1953
January 7 - President Harry S. Truman announces the United States has developed a hydrogen bomb.
January 20 - Change of US presidency from Harry S. Truman (1945-1953) to Dwight D. Eisenhower (1953-1961).
August 8 - Soviet prime minister Georgi Malenkov announces that Soviet Union has a hydrogen bomb
October 30 - Cold War: US President Dwight D. Eisenhower formally approves the top secret document National Security Council Paper No. 162/2, which states that the United States' arsenal of nuclear weapons must be maintained and expanded to counter the communist threat.
1954
November 23 - The Dow Jones Industrial Average rises 3.27 points, or 0.86%, closing at an all-time high of 382.74. More significantly, this is the first time the Dow has surpassed its 1929 peak level reached just before that year's crash.
1956
October 31 - Suez Crisis: The United Kingdom and France begin bombing Egypt to force the reopening of the Suez Canal
1957
January 2 - San Francisco and Los Angeles stock exchanges merge to form Pacific Coast Stock Exchange.
January 20 - Dwight D. Eisenhower inaugurated for second term as President of the United States.
March 7 - Congress approves the Eisenhower Doctrine.
March 8 - Egypt re-opens the Suez Canal
March 25 - Treaty of Rome (patto di Roma) establishes the European Economic Community (EEC); see EU.
April 12 - United Kingdom announces that Singapore will gain self rule January 1, 1958.
July 29 - The International Atomic Energy Agency is established.
October 4 - Sputnik program: The Soviet Union launches Sputnik I, the first artificial satellite to orbit the earth.
October 31 - Toyota begins exporting vehicles to the U.S
December 6 - First U.S. attempt to launch a satellite fails, the rocket blowing up on the launch pad
1958
January 31 - The first successful American satellite, Explorer I, is launched into orbit.
February 1 - Egypt and Syria unite to form the United Arab Republic.
March 11 - U.S. B-47 bomber accidentally drops an atom bomb on Mars Bluff, South Carolina.
October 1 - NASA starts operations and replaces the NACA.
1959
February 19 - The United Kingdom grants Cyprus its independence.
1960
February 11 - Twelve Indian soldiers die in clashes with Chinese troops at their common border.
February 13 — Nuclear testing: France tests its first atomic bomb in the Sahara.
March 6 - Vietnam War: The United States announces that 3,500 American soldiers will be sent to Vietnam.
August 19 - Sputnik program: The Soviet Union launches Sputnik 5, with the dogs Belka and Strelka (Russian for "Squirrel" and "Little Arrow"), 40 mice, 2 rats and a variety of plants. The spacecraft returns to earth the next day and all animals are recovered safely
November 8 — United States presidential election, 1960: In a close race, John F. Kennedy is elected over Richard M. Nixon, becoming the youngest man elected to that office.
World population: 3,021,475,000
1961
January 20 - John F. Kennedy becomes the 35th President of the United States.
June 25 - Iraqi president Abdul Karim Kassem announces he is going to annex Kuwait.
October 30 - Nuclear testing: The Soviet Union detonates a 58 megaton yield hydrogen bomb known as Tsar Bomba over Novaya Zemlya. It remains the largest ever (man-made) explosion.
November 18 - U.S. President John F. Kennedy sends 18,000 military advisors to South Vietnam.
December 11 - The Vietnam War officially begins, as the first American helicopters arrive in Saigon along with 400 U.S. personnel.
December 17 - India occupies Goa.
December 31 - The Marshall Plan expires, after having distributed more than $12 billion in foreign aid to rebuild Europe.
1962
January 4 - New York City introduces a subway train that operates without a crew on board.
January 9 - Cuba and the Soviet Union sign a trade pact.
February 3 - The U.S. announces its trade embargo against Cuba.
September 21 - A border conflict between China and India erupts into fighting.
October 14 - Cuban Missile Crisis begins: A U-2 flight over Cuba takes photos of Soviet nuclear weapons being installed. A stand-off then ensues the next day between the United States and the Soviet Union, threatening the world with nuclear war.
November 1 - The Soviets begin dismantling their missiles in Cuba.
1971
August 15 - President Richard Nixon announces that the United States will no longer convert dollars to gold at a fixed value, effectively ending the Bretton Woods system. He also imposes a 90-day freeze on wages, prices and rents.
November 15 - Intel releases the world's first microprocessor, the Intel 4004.
December 18 - The U.S. dollar is devalued for the second time in U.S. history.
1973
February 13 - The United States Dollar was devalued by 10%.
March 29 - The last United States soldier leaves Vietnam.
October 17 - The Arab Oil Embargo against several countries which support Israel triggers the 1973 energy crisis.
December 23 - OPEC doubles the price of crude oil
1974
March 18 - Oil embargo crisis: Most OPEC nations end a 5-month oil embargo against the United States, Europe and Japan
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