Answer:
The main conflict in the book Refugee by Alan Gratz is that between the three children and the regimes from which they're trying to escape. Adults would find such a conflict difficult to resolve, but as children, Josef, Isabel, and Mahmoud find it especially hard.
The distinction between the two is important… So, refugees and IDPs have each fled home to survive. Refugees have crossed an international border to find safety. Internally displaced persons (IDPs) have found safety somewhere within their own country