Answer: Basically ALQAIDA want to create fear and destruction in American society.
Explanation:
After the 9/11 attacks, Al Qaeda aimed to change American society's institutions and cultural values. By targeting symbols like the World Trade Center and the Pentagon, they sought to instill fear and reshape America's economic, military, political, and social norms through violence and disruption.They attacked on the world trade center as a symbol of disrupt America economical market.Attack on pentagon is symbol of disrupting America defense and command structure.They wanted to attack on white to break down the political influence of America.