<span>The lines are trending in opposite directions; the world average is less poor, while Sub-Saharan African average is trending more poor. (just took the quiz and got 100)</span>
Answer:
Traditionally this region always attracted many immigrants.
I believe that the most fitting answer for this question would be that the Crusades were called to fight against the Muslims. In 1095, the Pope claimed that Muslims were destroying the Holy Land and called on European Christians to put an end to it. They sought to regain control over Jerusalem.
The real causes of World War I included politics, secret alliances, imperialism, and nationalistic pride. However, there was one single event, the assassination of Archduke Ferdinand of Austria, which started a chain of events leading to war.
