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  Al-Qaeda was formed after the Soviet Union invaded Afghanistan. Bin Laden and the Arab Afghans fought the Soviet Union. The Soviet Union left in 1988.
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  Operation Desert Storm - the United States and its allies defeated Iraq in a ground war that lasted 100 hours, Gulf War, Persian Gulf War - a war fought between Iraq and a coalition led by the United States that freed Kuwait from Iraqi invaders.
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  Bin Laden leaves Saudi Arabia for Sudan
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  George H.W. Bush sends 28,000 American troops to Somalia.
Bush wanted to help the Somali people since all attempts to send food to them were intercepted by war lords. - 
  
  18 Americans died when their Black Hawk helicopter was shot down over Mogadishu, Somalia.
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  The 1993 World Trade Center bombing was a terrorist attack on the World Trade Center, carried out on February 26, 1993, when a truck bomb detonated below the North Tower of the World Trade Center
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  Sudan expels bin Laden, and he returns too Afghanistan
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  19 American airmen were killed and hundreds injured at US military barracks. The Hezbollah & Iran were blamed at the time. Bin Laden claimed responsibility and there is lots of evidence that he was involved.
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  Al Qaeda, led by bin Laden and Ayman Zawahiri declare war on American.
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  Two American embassies in Kenya and Tanzania were bombed simultaneously. 220 people were killed. August 7th, 1998 was the 8th anniversary of American troops arriving in Saudi Arabia.
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  Al Qaeda suicide attacker, 17 sailors killed, 39 injured.
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  The World Trade Centers in New York we hit by high jacked air liners. 2819 people were killed, 343 firefighters and paramedics were killed.