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An informal agreement that resolved the disputed 1876 presidential election, leading to the withdrawal of federal troops from the South and marking the end of the Reconstruction era. -
Marked the U.S.'s emergence as a world power, gaining control over Guam, Puerto Rico, and the Philippines. -
After repeated attacks on American ships and the Zimmermann Telegram, the U.S. joined the Allies in World War I. -
Triggered the Great Depression, causing massive unemployment and economic turmoil across the U.S. -
Japan's surprise attack on Pearl Harbor led to the U.S. entering World War II. -
Allied troops landed in Normandy, France—turning the tide of World War II against Nazi Germany. -
The Supreme Court declared racial segregation in schools unconstitutional, fueling the civil rights movement. -
Outlawed discrimination based on race, color, religion, sex, or national origin. -
Neil Armstrong became the first human to walk on the moon, a major Cold War victory for the U.S. -
Led to President Nixon’s resignation—the only U.S. president to resign from office.
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Terrorist attacks on the World Trade Center that killed nearly 3,000 people and led to the War on Terror. -
The U.S. invaded Iraq claiming weapons of mass destruction were present—none were found. -
A devastating hurricane that flooded New Orleans and exposed issues of poverty and government response. -
Barack Obama became the first African American president in U.S. history. -
The Supreme Court legalized same-sex marriage nationwide. -
A global health crisis that shut down economies, schools, and changed daily life around the world.
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Mass protests erupted nationwide against police brutality and racial injustice after George Floyd's death. -
Supporters of President Trump stormed the Capitol in an attempt to overturn the 2020 election results. -
Major tech companies slashed jobs while artificial intelligence tools like ChatGPT and DeepSeek reshaped industries.
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The Supreme Court ended federal abortion protections, allowing states to regulate or ban the procedure.