<span>Complex drainage systems to keep structures from flooding this works</span>
The Russian Civil War was a civil war fought from November 1917 until October 1922 between several groups in Russia. The main fighting was between the Red Army and the White Army. The Red Army was an army of communists. ... After this war, the communists established the Soviet Union in 1922.
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In the nineteenth century, Mexican American, Chinese, and white populations of the United States collided as white people moved farther west in search of land and riches. Neither Chinese immigrants nor Mexican Americans could withstand the assault on their rights by the tide of white settlers.