Complex sentence: McCabe used traveling salesmen and African-American newspapers to advertise lots for sale in Langston, and the deeds which accompanied the sale of these lots stipulated that their re-sale could only be to other African-Americans.
Split into simpler sentences: McCabe used traveling salesmen and African-American newspapers to advertise lots for sale in Langston. The deeds which accompanied the sale of these lots stipulated that their re-sale could only be to other African-Americans.