Answer: Ohio played a major role in leading escaped slaves from lives of captivity to their dreams of freedom. The Underground Railroad, a legendary path to freedom used by thousands of runaway slaves, was an intricate system designed to reach northern destinations where many slaves found it possible to avoid recapture.
Mir Jafar gained the the throne of Bengal as a result. That didn't matter as he was controlled by the British.
B. If you're referring to the Abrahamic Covenant (circumcise your kids because all Jews are Abram's grandkids) then yes. Christians don't acknowledge this, and anyone can enter Christianity through the sacraments.
The communist had enormous political power among the German workers.