This document provides background information on the conflict in Northern Ireland between Protestants and Catholics. It discusses the history of British rule in Ireland and the partitioning of the island in 1921. It then outlines several causes of the conflict in Northern Ireland, including divided loyalties between British and Irish identities, unequal allocation of housing and jobs, lack of voting rights for Catholics, and lack of opportunities for social interaction between the two communities due to segregated schools and residential areas. The underlying cause is identified as the lack of a common identity between Protestants and Catholics.