Labor was organized on an international basis
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The contribution to the study of biology that Charles Darwin is known for is Evolution, In biology evolution is the change in characteristic of a species over several generations and relies on the process of natural selection.
Choir stalls or fixed seating
An ambassador is the President's highest-ranking representative to a specific nation or international organization abroad. ... A key role of an ambassador is to coordinate the activities not only of the Foreign Service Officers and staff serving under him, but also representatives of other U.S. agencies in the country.