Answer:
The reason why many historians regard the printing press as the most important invention of the past millennium is because it allowed for thoughts and ideas--and thus things like revolutions and large-scale changes--to spread far more quickly and effectively.
Explanation:
C would be the correct answer
The answer should be out of the ones on the abc list so the answer you need to choose is d
Answer: a central government is national government from a single important city rather than local government.
Explanation: its purpose is to oversees finance, commerce, national defense, foreign affairs, and all laws 'necessary and proper'.