Explanation:
Interior Migration happens when someone moves from one part of their country to another. Immigration is where you move from your country to another country.
I think it's the one about mitosis.
The aim of the remainder of the Crusades in the 13th century was to combat anyone considered an enemy of the Christians.
The goal of Albigensian Crusade(1208-1229), was to eliminate the Cathars sect in southern France. Another Crusade, The Baltic(1211-1225), had the same objective but with the pagans in Transylvania.
In 1216 the Crusades attacked Egypt but were defeated by the Muslims in 1221. The Muslims were commanded by Al-Malik al Kamil.
depends on the situation but I would write N/A