The U.S. military action in Afghanistan and Iraq was triggered by the attack on the World Trade Center on September 11, 2001.
The event that triggered U.S. military action in Afghanistan and Iraq was the attack on the World Trade Center on September 11, 2001. This terrorist attack, carried out by the al Qaeda network, resulted in the U.S. launching the 'War on Terror,' initially targeting Al-Qaeda but later expanding into full-scale invasions of Afghanistan and Iraq.
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