USA HISTORY

Detailed explanation-1: -Migration is the physical movement of people from one place to another; it may be over long distances, such as moving from one country to another, and can occur as individuals, family units, or large groups.

Detailed explanation-2: -Forced migration exists when a person is moved against their will (slaves), or when the move is initiated because of external factors (natural disaster or civil war).

Detailed explanation-3: -Some people move in search of work or economic opportunities, to join family, or to study. Others move to escape conflict, persecution, terrorism, or human rights violations. Still others move in response to the adverse effects of climate change, natural disasters, or other environmental factors.

Detailed explanation-4: -A refugee is someone who has been forced to flee his or her country because of persecution, war or violence. A refugee has a well-founded fear of persecution for reasons of race, religion, nationality, political opinion or membership of a particular social group.