 Complete the following phrase:  The Mughal Empire suffered several blows due to invasions from Marathas, Jats, Afghans and Sikhs. In 1737, Bajirao I marched towards Delhi with a huge army. The Marathas defeated the Mughals in the First Battle of Delhi. The Maratha forces sacked Delhi following their victory against the Mughals. In 1739, the Mughal Empire lost the huge Battle of Karnal in less than three hours against the numerically outnumbered but military superior Persian army led by Nader Shah during his 