The only u.s. state to call its political subdivisions "parishes" is

Louisiana - parishes are the same thing as counties, the term comes from Catholicism and dates/ties back to when the territory was under Spanish/French control (but Spain was much more Catholic than France).

Louisiana

Explanation:

Louisiana is the only state to call its divisions “parishes” instead of “counties.”

The correct answer is that they disrupted the lives of people in those regions. For example, when the communists came they took away land and farms and companies from people who had them because they were considered to be public property according to communists, so they ran away to the US where they could run their own businesses and have their own land.