Answer:
Step-by-step explanation:
The advent of modern, international terrorism is commonly traced back to the terrorist attacks on September 11, 2001. These attacks, orchestrated by the extremist group Al-Qaeda, involved the hijacking of commercial airplanes and crashing them into the World Trade Center towers in New York City and the Pentagon in Washington, D.C. The magnitude of the attacks, the use of civilian aircraft as weapons, and the high number of casualties shocked the world, leading to a significant shift in global security measures and the subsequent "War on Terror" launched by the United States. This event marked a turning point in modern history, shaping the way terrorism is perceived and countered on an international scale.
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