Final answer:
The sequence of events leading to the September 11 attacks involved Al-Qaeda's actions in North Africa and the subsequent response known as the 'War on Terror.'
Explanation:
Attacks on Embassies in North Africa - Al-Qaeda was linked to the first terror bombing of the World Trade Center in New York in 1993 and was actively involved in the bombing of US embassies in Kenya and Tanzania in 1998.
Beginning of the Cold War - The September 11, 2001, terrorist attacks marked the beginning of the 'War on Terror,' an international military campaign led by the United States and the United Kingdom against Al-Qaeda and other associated militant organizations.
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