North Korea has a closer relationship with China because both of those countries have, at some point in their history, implemented a communist regime. Also, during the Korean war, the United States were very involved which could cause a feeling of animosity between the U.S. and North Korea.
The answer is A. Ethnic groups
The British policy of salutary neglect toward the American colonies inadvertently contributed to the American Revolution. This was because during the period of salutary neglect, when the British government wasn't enforcing its laws in the colonies, the colonists became accustomed to governing themselves
