What is the name of an escape route that took slaves to go north

Ineed to have answers for numbers 2-4 reply to this question

In the 1980s, more russians worked to encourage change in the government by a) establishing a new political system. b) rallying for democratic reforms. c) supporting the democratic system. d) resisting gorbachev’s reforms.

Was the civil war inevitable? could anything have been done through compromise to stop it, or did it have to happen?