What impact did World War I have on the Great Migration?

Throughout American history, wartime necessity has often opened new political and social avenues for marginalized groups. This familiar scenario played out after the United States intervened in the First World War in April 1917. By participating in the war effort, women suffrage activists made a compelling, and ultimately successful, case for voting rights: After all, how could America protect democracy abroad without extending it to half the population at home? Likewise, Black Americans furthered their claim for racial equality at home by their contributions on European battlefields and on the home front filling industrial jobs.