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July 4, 1776: Declaration of Independence signed
September 17, 1787: Constitution written
December 15, 1791: Bill of Rights ratified -
1869: Transcontinental Railroad Completed
1876: Telephone invented by Alexander Graham Bell -
was an era that occurred during the late 19th century, from the 1870s to about 1900. The Gilded Age was an era of rapid economic growth, especially in the Northern United States and the Western United States.
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The Progressive Era (1896–1916) was a period of widespread social activism and political reform across the United States of America that spanned the 1890s to the 1920s.
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a policy of extending a country's power and influence through diplomacy or military force.
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began in 1914 after the assassination of Archduke Franz Ferdinand of Austria.
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was a decade of economic growth and widespread prosperity, driven by recovery from wartime devastation and deferred spending, a boom in construction, and the rapid growth of consumer goods such as automobiles and electricity in North America and Europe
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was the worst economic downturn in the history of the industrialized world, lasting from 1929 to 1939. It began after the stock market crash of October 1929, which sent Wall Street into a panic and wiped out millions of investors.
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was a global war that lasted from 1939 to 1945. It involved the vast majority of the world's powers.
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the first military action of the Cold War began when the Soviet-backed North Korean People's Army invaded its pro-Western neighbor to the south.
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was a struggle for social justice that took place mainly during the 1950s and 1960s for Black Americans to gain equal rights under the law in the United States.
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Vietnam's partition into the communist North and the democratic South in 1954. Tensions escalated into armed conflict between the two sides.
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the Berlin Wall came down, borders opened, and free elections ousted Communist regimes everywhere in eastern Europe. In late 1991 the Soviet Union itself dissolved into its component republics. With stunning speed, the Iron Curtain was lifted and the Cold War came to an end.
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Technological advancement and the modern age we live in today.