Answer:
Great Schism of 1054
Explanation:
The church in 1054 split into Roman Catholic and Eastern Orthodox due to differences in religious and political beliefs that had been developing between the east (Eastern Orthodox) and the west (Roman Catholic).
I know one cause was because he wanted to find India
1. gulf of tonkin incident
2. truman doctrine
3.containment of communism
probably a little off but it'll lead you in the right direction.
(I was literally learning this a couple months ago and my memory is a little rusty)
If you want good sources go to wikipedia and look at the sources used in the wikipedia article. DO NOT USE THE WIKIPEDIA ARTICLE ITSELF AS A SOURCE!
Christopher columbus in 1492.
