Complex sentence: William Walker was appointed Episcopal Bishop of North Dakota in 1883 and was faced with overseeing an enormous territory with few settlers and the fact that Western towns often were born or died as a result of the fortunes of those living in them.
Split into simpler sentences: William Walker was appointed Episcopal Bishop of North Dakota in 1883. He was faced with overseeing an enormous territory with few settlers and the fact that Western towns often were born or died as a result of the fortunes of those living in them.