The growth of African-Americans in Harlem can be attributed to what event? Civil War
Great Migration
World War Two
Prohibition

the answer is 1.. i think

world war i began in 1914, after the assassination of archduke franz ferdinand, and lasted until 1918. during the conflict, germany, austria-hungary, bulgaria and the ottoman empire (the central powers) fought against great britain, france, russia, italy, romania, japan and the united states (the allied powers). to new military technologies and the horrors of trench warfare, world war i saw unprecedented levels of carnage and destruction. by the time the war was over and the allied powers claimed victory, more than 16 million people—soldiers and civilians alike—were dead.

explanation:

these civilizations were located around fertile rivers, where they could produce an abundance of crops

the heightened emotion and nature images.