The answer is true but I’m not 100%
The liberation of a concentration camp
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.
Answer:
Melting pot theory.
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Zhou dynasty is the longest lasting dynasty in the Chinese history
