Was the Great Wall an effective tool for maintaining power? Why or why not?

The short yes, the Great Wall was successful in keeping semi-nomadic invaders out, which was the primary concern at the time. However, the wall did not stop some large scale invasions, and even the nomadic people were able to breach the wall from time to time.

Explanation:

(happy to help)

Kept semi-nomadic invaders out, but not invasions, so yes.

Explanation:

can you give a picture of the map, i'll be able to update my answer!

"the importance of the japanese economy and security is far greater than that of the asian values"