Answer:
A. Russia and B. China
Explanation:
This can be found by just process of elimination, only the Soviet Union and China are communist out of the answers. And China had sent troops to North Korea and Russia backed them up. The one with the most influence though would most likely be China.
Rust Belt gets its name from the abandoned factories and urban decay that have marked the region since the 1970s.
22 percent of them are hope this helps
They encouraged people to settle because they were looking for an economic opportunity so not A and they mostly thought they were going to get rich from gold, so not B so I would say C