If you are taking about the U.S., I can help.
Land- Settlers moved west because this was their chance to get their land, it is also why immigrants came this way, to own land here, because they would never be able to from where they came from.
Gold- Gold motivated a lot of people in later on years, because there was a gold rush and everyone wanted to make a fortune.
Answer:
Spring.
Explanation:
Russia is in the northern hemisphere.
North Korea is the country that borders both China and South Korea.