Complex sentence: Before its acquisition by the East India Company, Nawada was ruled by the nearly independent Rajas of Hisua, and after its acquisition it was the center of great disorder till 1845, when it became the headquarters of the newly created subdivision.
Split into simpler sentences: Before its acquisition by the East India Company, Nawada was ruled by the nearly independent Rajas of Hisua. After its acquisition, Nawada was the center of great disorder till 1845, when it became the headquarters of the newly created subdivision.