Answer:
Politics, economics and biology.
Explanation:
Exercising social work implicates a wide variety of psychosocial services to persons, familiar groups, and small groups related to a diversity of human problems in their lives. Social work takes place both in public and private contexts. It concerns an evaluation of interaction within a person's biological, psychological, political, and social experiences, which gives the professional a guide to intervening clinically.
Europe was a major source of migrants because of the diminishing returns for the middle class in the mainland.
Explanation:
Europe had been colonizing new lands throughout the century and the condition at the home had been worsening for the middle class who sometimes found it better off to either move to a colony or to switch to another nation.
Thus, mass migrations happened especially towards the New World.
This was also the time of migrations to Australia New Zealand and other nations that were settled by Europeans who were in search of a better life.
Answer:
I don't get the question, can you explain further?
Explanation: