interior districts of Warangal , Adilabad , Khammam , Mahbubnagar , Nalgonda , Rangareddi , Karimnagar , Nizamabad , Medak , and the state capital, Hyderabad . The Krishna and Godavari rivers flow through the region from west to east. Contents [ hide ] 1 History 1.1 Post-independence history 1.1.1 Merger