Complex sentence: African Americans continued to migrate to the state after the war; there were a total of 17,108 blacks in Kansas in 1870, with 43,107 in 1880, and 52,003 by 1900.
Split into simpler sentences: African Americans continued to migrate to the state of Kansas after the war. There were a total of 17,108 African Americans in Kansas in 1870, with 43,107 in 1880, and 52,003 by 1900.