In what decade did prohibition mostly occur

19th century, from 1920 to 1933

Explanation:

The Eighteenth Amendment which illegalized the manufacture, transportation, and sale of alcohol was passed in 1917. In 1919 the amendment was ratified to make it constitutional.

  On December 5, 1933, the 21st Amendment was ratified, as announced in this proclamation from President Franklin D. Roosevelt. The 21st Amendment repealed the 18th Amendment of January 16, 1919, ending the increasingly unpopular nationwide prohibition of alcohol.

apartheid, (afrikaans: “apartness”) policy that governed relations between south africa's white minority and nonwhite majority and sanctioned racial segregation and political and economic discrimination against nonwhites. people should not get this wrong. i was just answering a question.