Because of fashioned virtues.
The Capture of Jerusalem - The Crusaders achieved their aims in retrieving the Holy Land but their claim was soon challenged by the Egyptians. Had reduced calvary and need to rest before the attack/reclaim.
The Crusaders enter Damascus - Christians were defeated and lead them to be defensive for quite some time. Dispute broke out over how to approach this siege.
Hope this helps!
Correct answer: George Bush - end of the Cold War
People give various dates for the ending of the Cold War:
The demolition of the Berlin Wall in November, 1989
A peaceful summit meeting between the US and USSR leaders at Malta in December 1989
The reunification of Germany in October, 1990
The dissolving of the Soviet Union in December, 1991.
All of those events occurred during the presidency of George H.W. Bush.
The other pairings noted in the question are misaligned. Haiti had its first democratic elections during the George H.W. Bush presidency. The World Trade Organization was created during the time Pres. Clinton was in office. And the War on Terror began under George W. Bush.