United States

Some of the key events about United States

• 1776

  Declaration of Independence was adopted, establishing the United States as a sovereign nation
• 1787

  The Constitution of the United States was signed, creating the framework for the federal government
• 1803

  The Louisiana Purchase doubled the size of the United States
• 1861

  The American Civil War began, resulting in over 600,000 deaths
• 1869

  The First Transcontinental Railroad was completed, connecting the East and West coasts
• 1903

  The Wright brothers achieved the first sustained, controlled, powered aircraft flight
• 1920

  The 19th Amendment was ratified, granting women the right to vote
• 1929

  The Great Depression started, causing widespread economic hardship
• 1941

  The Japanese attack on Pearl Harbor drew the United States into World War II
• 1944

  D-Day invasion marked a turning point in World War II
• 1963

  The President was assassinated in Dallas, Texas
• 1968

  Civil rights leader was assassinated in Memphis, Tennessee
• 1969

  The Apollo 11 mission successfully landed humans on the Moon
• 1970

  National Guardsmen fired on student protesters at Kent State University, killing four
• 1990

  The Human Genome Project was launched, aiming to map the entire human genetic code
• 1995

  A domestic terrorist bombing in Oklahoma City killed 168 people
• 2001

  Terrorist attacks on September 11 killed nearly 3,000 people
• 2005

  Hurricane Katrina devastated New Orleans and the Gulf Coast
• 2008

  The first African American president was elected in the United States
• 2008

  The Great Recession began, leading to significant economic downturn

Disclaimer: This material is written based on information taken from open sources, including Wikipedia, news media, podcasts, and other public sources.