Answer:
American Morale was significantly raised and the Japanese stopped thinking they were invincible
Explanation
I believe it is the Twelfths Amendment
Answer:
Religion
Explanation: People such as Muslims for example will fight for their faith by even killing themselves or others.
What made ancient China so isolated was the dry deserts to the north and west of it, the Pacific Ocean to the east of it and the impassable mountains to the south of it.