1) After the death of Mahmud of Ghazni, the Ghaznavid Empire declined and fell to the Ghurid dynasty from Ghor. 2) Muhammad Ghauri of the Ghurid dynasty invaded northern India, but was initially defeated by Prithviraj Chauhan, a ruler of one of the small Rajput kingdoms. 3) In 1192, Ghauri defeated and killed Prithviraj Chauhan, establishing the Ghurid dynasty as the new rulers of northern India. However, on his return to Ghur, Ghauri was assassinated, leaving his general Qutb-ud-din Aibak to establish the Slave