Answer ==========> Give Citizens an incentive to perform Military Service.
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Answer: Oasis
Explanation: An oasis is a wet, fertile area in a desert. In other words, it’s a place that is a desert and water, tree’s, and plants are found here. Many humans and animals get their water from here to drink.
The cause of the feudal system was most likely the rise of the imperial Daimyo and the Shogun. The Shogun were Japanese warlords, pretty much. The Daimyo were the royal families. The feudal system was a social hierarchy that had the Japanese emperor at the top and the merchants in the bottom.