[["On September 11, 2001, a series of airline hijackings and suicide attacks were committed by 19 militants associated with the Islamic extremist group al-Qaeda against targets in the US, the deadliest terrorist attacks on American soil in US history. The attacks caused extensive death and destruction.", 38.0], ["On September 11, 2001, suicide hijackers crashed US passenger jets into the Twin Towers of the World Trade Center, causing the collapse of both towers, & killing thousands of people. A 3rd jet was crashed into the Pentagon, & a 4th hijacked flight was thwarted by passengers over Penn..", 25.0]]
what happened september eleven two thousand one
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