What leverage were protesters in montgomery able to use against the bus company?

The reason that African American made use of leverage in montgemery to be used against the bus company because of the fact that nearly 2/3 of African Americans made use of public transportation in montgemery by which if the boycott was successful, there will be a loss in revenue by the bus company forcing them to desegregation. The tactics used was suggested by Ida B. Wells-Bernett.

can someone me with this question:  

1) the end of the conflict between the north and the south didn’t just mark the end of a war; it marked the end of an entire way of life.” which statement best describes what this statement means?  

a) the southerners were no longer free and were controlled by the northern states.

b) the industrial economy in the north was not sustainable.

c) slavery became illegal, which changed completely the south’s labor force and the agricultural economy was destroyed.

d) the states decided to relinquish their independence and return to britain’s rule.