Complex sentence: Camp officials tried to arrange housing so that similar races and nationalities would be together, but even so, strong differences emerged between those who wanted repatriation and those who wanted to stay in the United States or return to the country they were expelled from.
Split into simpler sentences: Camp officials tried to arrange housing so that similar races and nationalities would be together. Unfortunately, strong differences emerged between those who wanted repatriation, and those who wanted to stay in the United States or return to the country they were expelled from.