It was determined from chemical analysis and observations by the EPA in the 1970's that the Love Canal in New York is considered to have "contaminated with toxic chemicals." Due to these, the canal was furthermore restricted to any human activities taking place due to the hazards it would produce.
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<h3>The Chinese Revolution of 1949. On October 1, 1949, Chinese Communist leader Mao Zedong declared the creation of the People's Republic of China (PRC).</h3>
hope it helps
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Nicholas Winton organized a rescue operation that brought approximately 669 ... He also had to find British families willing to care for the refugee children.
Maybe this can help, this is just something I found i believe the size varies because of the population in that district
