Question

The two Chinese groups that fought one another before the invasion of Manchuria were the: PRC CPC DMZ KMT

Answer 1

I believe the answer is: CPC and KMT

CPC refers to the Commuist Party of China and KMT refers to the Kuomintang. After the invasion of Manchuria, both of these parties decided to cease fire and join their force momentarily until they managed to get the Japanese army out of their territory.