C. was passed to keep America ethnically uniform.
Democracy:
United States: The United States uses a system of Indirect Democracy.
Canada: Canada uses a system of Constitutional Monarchy.
Zimbabwe: Zimbabwe has a Presidential Republic.
Autocracy:
North Korea: North Korea has a Family Regime. However, the current person in power is an autocrat, Kim Jong-un.
Their general standard of living increased, he ended unemployment, revived by G power. Is this helpful?