Which of the following was a cause of the great migration? • expansion of cotton fields • world war i • civil rights movement • the 19th amendment • plessey v. ferguson

World War I

Explanation:

The Great Migration was the movement out of the South of the United States by millions of African-Americans during the first half of the 20th century. They left the rural South and migrate towards the urban Northeast, Midwest, and West of the country.

The pace of this accelerated with the outbreak of World War I because the industrial parts of the United States needed more workforce in the urban areas.

I hope this answer helps you.

peasants’ war, (1524–25) peasant uprising in germany inspired by changes brought by the reformation, peasants in western and southern germany invoked   divine law to demand agrarian rights and freedom from oppression by nobles and landlords. as the uprising spread, some peasant groups organized armies. although the revolt was supported huldrych zwingli and thomas müntzerits condemnation by martain luther contributed to its defeat, principally by the army of the swabian league. some 100,000 peasants were killed. reprisals and increased restrictions discouraged further attempts to improve the peasants’ plight.

i think it would be " a" i might be wrong tho