What effect did the Singer sewing machine have on the Southern economy? It decreased the demand for enslaved laborers.
It decreased the demand for the cotton gin.
It increased the demand for skilled laborers.
It increased the demand for cotton material.

It increased the demand for cotton material

Explanation:

i think they came to washington to protest

was a long, primarily nonviolent series of events to bring full civil rights and equality under the law to all americans. the era has had a lasting impact on united states society, in its tactics, the increased social and legal acceptance of civil rights, and in its exposure of the prevalence and cost of racism. in the south violence and fraud in southern elections from 1868 to 1876, which had reduced black voter turnout and enabled southern white democrats to regain power in state legislatures across the south