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  Toyotomi Hideyoshi prohibited use of arms by farmers, merchants and monks he reduced the number of castles in order to destroy unnecessary stronghold.
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  It seemed to have come back every generation with varying degrees of intensity until the 1700s
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  The Black Death killed approximately 50 million people; it was spread through rats and transportation on the Silk Road.
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  South Korea launched and attack on japan from the sea with about 500 to 900 ships
 
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  When the king was forced to signa document guaranteeing people's rights.
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  A war between the Christians (led buy 3 kings) and the Muslims led by Saladin. It was prompted by the loss of Jerusalem in the second crusade.