Examlex
Explain what is meant by internal and external validity.
The Plague
A devastating infectious disease caused by the bacterium Yersinia pestis, known for causing several major epidemics throughout history, including the Black Death in the 14th century.
Coca-Cola
A carbonated soft drink brand that is one of the most widely recognized and consumed beverages worldwide.
American Influence
The impact or control exerted by the United States on the political, economic, or cultural aspects of other countries.
Warsaw Uprising
A major World War II operation by the Polish underground resistance, aimed at liberating Warsaw from German occupation, which took place in the summer of 1944.
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