In which year, terrorists crash two planes into New York's World Trade Centre on September 11 in a sequence of destruction?

2001 2000 2009 2011

2001

The correct answer is Option (1) - 2001 The September 11 attacks, commonly known as 9/11, were four coordinated suicide terrorist attacks carried out by the militant Islamic extremist network al-Qaeda against the United States on Tuesday, September 11, 2001