Help me answer All this question about history plz

What method did party bosses use to maintain the power of their political machines?

Which statement best summarizes the process of the abolition of slavery in the united states? o a slave owners agreed to limit and ultimately abolish slavery to prevent a slave rebellion similar to the haitian revolution o b. the united states did not abolish slavery until after many latin american countries did because it faced opposition from powerful slaveholders o c. the abolition movement in the united states used a series of legal challenges to successfully outlaw slavery. d. the abolition movement used nonviolent tactics to eventually convince the u.s. government to abolish slavery.

In which part of the united states did women first begin to get the right to vote? o a. the south o b. eastern coastal towns o c. the west o d. northern industrial cities