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Mount Saint Helens, a volcano in Washington, erupts. It caused over 1 billion dollars in damages and killed 57 people.
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US Space shuttle "Challenger" and made it 73 seconds into its flight when it exploded, killing all seven crewmembers. It is the worst disaster in the history of NASA.
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The US and Soviets sign an agreement declaring the disabling of hundreds of US and Soviet missiles, bringing the end of the Cold War nearer and drastically lowering tensions.
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Communist East Berlin declares it legal to travel to and from West Berlin. The civilians of East Berlin tear down the wall. The wall symbolized the desolation they had lived in East Berlin. This also helped to bring the Cold War closer to an end.
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Two men bomb the Murrah Federal Building in an act of domestic terrorism in Oklahoma City, killing 168 people including 19 children.
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The Cold War finally ends with George H.W. Bush declaring it ended at Malta.
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Two students of Columbine High School bring guns into and open fire on the school. They kill 14 people and injure 23. It is the fourth-deadliest school shooting in American history. -
On 9/11, two civilian airliners were taken over by Islamic terrorists and crashed into the twin towers in New York City, killing almost 3,000 civilians. This was the first international terrorist attack on American soil.