On August 5, 1861, President Lincoln imposes the first federal income tax by signing the Revenue Act. Strapped for cash with which to pursue the Civil War, Lincoln and Congress agreed to impose a 3 percent tax on annual incomes over $800.
Answer: B
Explanation: I believe that B is correct, I'm not 100% sure though.
Answer:
It helped s[read Christianity because during Pax Romana, there is end to killing of Christians and it helped them to be free to spread their religion. Also during a time of peace people would be willing to listen to them and open up to the peaceful religion.