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William McKinley, the 25th president of the United States, was shot on the grounds of the Pan-American Exposition in the Temple of Music in Buffalo, New York, on September 6, 1901, six months into his second term. -
On May 7, 1915, the German submarine (U-boat) U-20 torpedoed and sank the Lusitania, a swift-moving British cruise liner traveling from New York to Liverpool, England. Of the 1,959 men, women, and children on board, 1,195 perished, including 123 Americans -
The United States entered World War I on April 6, 1917, when Congress declared war on Germany. President Woodrow Wilson had asked for the declaration a few days earlier on April 2, citing Germany's resumption of unrestricted submarine warfare and the interception of the Zimmermann Telegram as key reasons for the decision -
The 19th Amendment to the U.S. Constitution prohibits denying the right to vote based on sex, officially granting women the right to vote across the United States. It was passed by Congress in 1919, ratified by the 36th state, Tennessee, on August 18, 1920, and certified on August 26, 1920 -
stock market crash of 1929, a sharp decline in U.S. stock market values in 1929 that contributed to the Great Depression of the 1930s. The Great Depression lasted approximately 10 years and affected both industrialized and nonindustrialized countries in many parts of the world. -
A domestic program of the administration of U.S. Pres. Franklin D. Roosevelt (FDR) between 1933 and 1939, which took action to bring about immediate economic relief as well as reforms in industry, agriculture, finance, waterpower, labour, and housing, vastly increasing the scope of the federal government’s activities -
Surprise aerial attack on the U.S. naval base at Pearl Harbor on Oahu Island, Hawaii, by the Japanese that precipitated the entry of the United States into World War II. -
The United States dropped two atomic bombs on Japan in August 1945, one on Hiroshima on August 6, 1945, and another on Nagasaki on August 9, 1945, which were the first and only uses of nuclear weapons in warfare. -
A landmark law signed by President Lyndon B. Johnson on July 2, 1964, that prohibits discrimination based on race, color, religion, sex, or national origin. Its purpose was to end segregation in public places, ensure equal access to public accommodations and education, and prohibit discrimination in employment. -
U.S. spaceflight during which commander Neil Armstrong and lunar module pilot Edwin (“Buzz”) Aldrin, Jr., on July 20, 1969, became the first people to land on the Moon and walk the lunar surface