What factors let to a growing american work force between 1860 and 1900

14 million people immigrated to the US, they came to find work and employers often paid their immigration fees if they would work for them for a specific amount of time.

14 million people immigrated to the US, they came to find work and employers often paid their immigration fees if they would work for them for a specific amount of time.

The  pan-african movement  was an "emotional, cultural, psychological and ideological  movement  that began among the  african  dispora in the western hemisphere, for a closer  purpose, so that  african  people could feel secure, attain political, economic as well as psychological power visa vis other races or world regions" .