An economic theory that calls for workers to take control of factories is

communism

Explanation:

a political theory derived from Karl Marx, advocating class war and leading to a society in which all property is publicly owned and each person works and is paid according to their abilities and needs.See also Marxism.

19th amendment granted women the right to vote. the 19th amendment guarantees all american women the right to vote.

i believe it would be a single seller : )