Answer:
C) rebellions in Ireland between 1916 and 1921
Explanation:
The religious conflict in Northern Ireland has been building on for some time, but it escalated in the early 20th century when multiple rebellions broke up. The main reason for the religious conflict was that part of the population was Catholic, while part was Protestant. This was used not just in religious manner, but also as a nationalistic one, as Northern Ireland was not very fond of being part of the British Empire. Once the conflict started it continued for quite some time, until the 1990's, and lot of terrorist attacks took place, as well as assassinations, clashes between the two groups and lot of deaths of innocent civilians.
