<span>a camel riding desert tribe from Arabia
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It was invented by the Sumerians, so it would be Sumer
About one-third increase to the size of the United States. The states of Nevada, Arizona, California, Utah and some parts of New Mexico and the Gadsden purchase completes the southern parts of Arizona and New Mexico. This land is from Mexico acquired by the United States.
I believe it was because the government was afraid that they might be spies for Japan, so they thought it was safer to keep them in one place so it would be easier to keep an eye on them. It also stemmed from racism due to the attack on Pearl Harbor and the U.S. fighting against the Japanese in the Pacific.