Five groups affected by industrialization between the years 1856-1920 include:
They helped alot
expansion of the railroads
fewer women and children in the workplace
an expanding job market, creating need for immagrant labor
1861 - 1865 Specific dates are April 1861 to April 1865.
After all the official surrenders of Confederate troops, Confederate guerrilla groups remained active well into the Summer of 1865. These groups feared that the Union would take revenge on them.