Complex sentence: The Khmer Loeu were forbidden from speaking their native languages or practicing their traditional customs and religion, which were seen as incompatible with communism; communal living became compulsory, and the province's few schools were closed.
Split into simpler sentences: The Khmer Loeu were forbidden from speaking their native languages or practicing their traditional customs and religion, which were seen as incompatible with communism. Communal living became compulsory, and the province's few schools were closed.