Yellow Sea<span>, East </span>China Sea<span>, and the South </span>China Sea.China<span> is located in East Asia </span>
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The pair of leaders that used political purges including the killing of opposition groups as a means of maintaining control of the government were Joseph Stalin and Mao Zedong. Stalin was the communist leader in Russia and Mao Zedong was another communist leader from the country of china. I hope it helps you.
I believe the answer is: Dropout
In research environment, a dropout describes the subjects who fail to fulfil the programs that created by the researchers from the beginning to the end. This would made every data that taken from the subject become inadmissible to make the research conclusion.