Why were the niger and senegal rivers important to the societies that developed in west africa?

How did the printing press make it difficult for the catholic church to stop the reformation? o a. priests were too busy printing and distributing bibles to oppose protestantism. o b. it created a growing middle class that was no longer interested in religion. o c. critics of the catholic church were able to quickly replace any hey writings the church destroyed. d. there were few printing presses in italy, where leadership of the catholic church was centered.

Who did the first work in creating vaccines

Enforces the laws.a.legislativeb.executivec.judicial