1. B. Immigrants are people who move into one country from another.
Emigrants are those people who leave a country. Urbanites are people who live in a town or a city. Nomads are people who move all the time.
2. One of the largest involuntary migrations in history was the transatlantic C. slave trade, when thousands of people were sold into slavery.
3. Areas in the countryside are also known as A. rural areas.
Urban areas are in the cities, suburbs are parts of a city, and ghettos are parts of cities occupied by minorities.