1). What happened in the terrorist attacks on the United States on September 11, 2001, and who was believed to be responsible?

2). How did the United States respond to the attacks?

My answers to these questions are the following:
1). On the morning of September 11th, 2001, Arab terrorists are believed to be responsible for hijacking four airliners. They crashed two planes into the World Trade Center towers and one into the Pentagon, the U.S. military headquarters near Washington D.C. The fourth plane crashed in Pennsylvania without striking its intended target, after some passengers overwhelmed the hijackers.

2). The United States responded to these attacks by declaring war on terrorism and called on other nations to join the United States in fighting global terrorism. President George W. Bush also pushed for new security at home and authorized a search for suspected terrorists. New airport security measures were enacted, extra precautions were taken at public schools, and the Department of Homeland Security was also established after the September 11 attacks.

8 answers

Your answers are good. You could add to your first answer that a terrorist group called Al Qaeda and its leader, Osama bin Laden, claimed responsibility for these attacks.

http://en.wikipedia.org/wiki/Responsibility_for_the_September_11_attacks
Am I correct?
Your answers will be correct if you include Al Qaeda and bin Laden in them.
1). On the morning of September 11th, 2001, an Arab terrorists group known as al-Qaeda and their leader, Osama bin Laden, are believed to be responsible for hijacking four airliners. They crashed two planes into the World Trade Center towers and one into the Pentagon, the U.S. military headquarters near Washington D.C. The fourth plane crashed in Pennsylvania without striking its intended target, after some passengers overwhelmed the hijackers.

2). The United States responded to these attacks by declaring war on terrorism, expanding it by taking military action against Irag and Afghanistan and overthrowing the al-Qaeda network, and called on other nations to join the United States in fighting global terrorism. New airport security measures were enacted, extra precautions were taken at public schools, and the Department of Homeland Security was also established after the September 11 attacks. President George W. Bush also pushed for new security at home and authorized a search for suspected terrorists.
Excellent! :-)
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