Complex sentence: The provincial setup was later altered and its name had changed to Diyarbekir Province and had some of its subdivisions attached to other provinces; after the establishment of Republic of Turkey in 1923, the region was incorporated into the newly created state.
Split into simpler sentences: The provincial setup was later altered and its name had changed to Diyarbekir Province and had some of its subdivisions attached to other provinces. After the establishment of Republic of Turkey in 1923, the region was incorporated into the newly created state.