Answer:
a.) Operating big businesses.
Explanation:
A. Bus boycotts in Montgomery, Alabama
D. Ratificación of the 13th, 14th, 15th amendments
Answer: Jesus Christ
Explanation: He is the reason why there is a religion called Christianity. Without Jesus, there wouldn't be a Christian movement.
In fact, Christian was the name given to all who were followers of Christ's teachings. The movement then grew to become Christianity that we know today.
Its either the fist option or the second option, try the second option.