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.

question 10: the answer is c, to their constituents address a problem.

question 11: i think it would be domestic bills, which deal with american issues only and public bills, which affect the whole nation.