I’m pretty sure it would be choice B. if not then D
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:
The answer to your question is Unitary government.
Hope this helps! God bless
-vf
The Irrawaddy, Chao Phraya, and Mekong Rivers all flow from B- North to South.
I hope this helps! :)