One important result of the Crusades was that a Muslim communities in Europe grew larger.
b the Church began studying Islamic texts.
c there was an increase in trade and cultural exchange between Europe and the Middle East.
d a permanent crusader base was established in the Middle East.

I think its A

Explanation:

While the Crusades ultimately resulted in defeat for Europeans and a Muslim victory, many argue that they successfully extended the reach of Christianity and Western civilization. 

answer; i believe the two groups were irish immigrants and chinese immigrants;

answer: mickey mouse

explanation: