sentences:  Though the Nizam claimed supremacy over the Nawab, his control became very weak and he could not prevent the office of the Nawab from becoming hereditary and so he wisely restricted himself to claiming the right of giving his formal approval to their appointment.Thus Saadatullah Khan became a senior and independent ruler of the Carnatic extending from the River Godicame on the North to the borders of Travancore on the South and enclosed between the Eastern Ghats and the Sea.Governor Collect, obtained from him in 1717, the firman for Tiruvottiyur, Sattangadu, Kathiwakam, Vysarpady and Nungambakkam.