Almost three thousand people died in the 2001 attacks. The attack that changed the world dictated changes, for example, in the way people travel by plane.

It was 21 years ago that the world registered one of the most remarkable moments of the 21st century. It was 8:46 am local time when the first plane crashed into the north tower of the World Trade Center. The Boeing, which left Boston for Los Angeles, was taken over by terrorists, who diverted the aircraft and caused it to crash into that business complex, made up of seven buildings.

The event quickly took over the media around the world, who thought it was an accident. And it was live that the planet watched the second aircraft crash, 17 minutes after the first attack. At 9:03 am, a second Boeing, on the same route as the first, crashed into the south tower.

It was at that moment that the suspicions of a terrorist attack were confirmed. But the attacks did not stop. At 9:37 am, a third aircraft, which had departed Washington for Los Angeles, hit the Pentagon.

About half an hour later, a fourth plane crashed in Pennsylvania after passengers fought off the terrorists. Initial investigations pointed out that the destination would be the White House, the official home of the president of the United States, but the authorities found that the target would be the Capitol, the seat of the US Congress.

In memory is still the collapse of the two towers, which led to panic in Manhattan.

Al-Qaeda claimed the attack and Osama Bin Laden became the United States’ number one enemy, which began the fight against terror. The leader of the terrorist organization was eventually killed by US forces on May 2, 2011, in an operation called the Spear of Neptune.

In all, the attacks led to the death of 2977 people, in addition to the 19 hijackers of the planes. It is considered the attack with the highest death toll in history.

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