Answer in a word:

Write a note on the invasion of Nadir Shah.

Nadir Shah considered to be one of the greatest warriors of Persia. He wanted to acquire the wealth of India. He was aware that Muhammad Shah, the ruler in India was incompetent and sent a messenger to Muhammad Shah to tell him not to provide shelter to the Afghans fleeing from Kandahar, but Muhammad Shah didn’t respond to him, so Nadir Shah invaded India in A.D. 1739. He captured Peshawar and defeated Mughal emperor and acquired the money he bound to receive from war and plundered Delhi. This caused violence in the city. He returned with a huge amount of booty but was later killed by his soldier.