Which statement best summarizes the long-term impact of the September 11 attacks on the United States?

1. They reshaped U.S. foreign policy, security policy, and civil liberties debates
2. They mainly influenced U.S. trade policy while leaving national security unchanged
3. They led the United States to withdraw from most of its international alliances
4. They primarily affected only U.S. diplomatic relations with European countries

Practice all 20 9/11 and War on Terror questions