Pope Urban II was the person responsible for the very influential speech that called for the start of a crusade. He wanted to take back the Holy Land from the Muslims, along with the leader of the Byzantine Empire writing him a letter asking for help. This was a very powerful speech which started the rise of the Crusaders, who Pope Urban II promised if they would fight in this war they would get the remission of their sins, even if they died in battle.
One of the most significant changes that Gorbachev made to the Soviet economy was that he was the first leader to really try to ease the planned economy and let some market forces in.
Its either the fist option or the second option, try the second option.
The battle of britain, which was the first major major military campaign in history to be fought in air. Was the result of a german plan to win air superiority over Southern Britain.
The most important battles of the American Revolutionary War was Quebec, Saratoga, Lexington, and Concord.