The keyword "911 tahun berapa" is an interrogative phrase in the Indonesian language, which translates to "What year was 911?". The core subject of the query is the event "911," which functions as a proper noun referring to a specific historical event. The answer to this query is the year 2001. The attacks occurred on Tuesday, September 11, 2001.
The September 11 attacks were a series of four coordinated terrorist attacks by the Islamist extremist network al-Qaeda against the United States. On that morning, 19 terrorists hijacked four commercial airliners. Two of the planes were crashed into the Twin Towers of the World Trade Center in New York City, leading to their collapse. A third plane was crashed into the Pentagon in Arlington, Virginia, and the fourth plane crashed in a field in Shanksville, Pennsylvania, after passengers and crew fought back against the hijackers.
The event is a significant historical marker of the 21st century due to its immediate and long-term geopolitical consequences. The attacks, which resulted in 2,977 deaths, were the deadliest terrorist act in world history. They prompted the United States to launch the "War on Terror," which included the invasion of Afghanistan and had a profound and lasting impact on international security protocols, foreign policy, and civil liberties worldwide.
