How did african american the abolitionist movement gain strength?

Former Slaves like Fredrick Douglas spoke out against the system of slavery.  Harriet Tubman who was also a former slave helped runaway slaves escape to the North where they found a better life.  Many Blacks enlisted in the Union army to fight for the Union.  President Lincoln praised these men for helping win the war.

the correct answer is: (1) affected by gerrymandering; (2) not affected by gerrymandering.

gerrymandering is known as a practice that intends to establish a some kind of political advantage for a particular party or group. to do this district boundaries are manipulated. the new resulting district is named a gerrymandering.

in other words, what gerrymandering does is to draw the boundaries of electoral districts trying to benefit the party who is doing it. sometimes, the party controlling the legislature will redraw it so they can maximize the number of districts they are likely to control.