Sur Empire
The instability of the empire became evident under his son, Humayun (reigned 1530–1556), who was forced into exile in Persia by rebels. The Sur Empire (1540–1555), founded by Sher Shah Suri (reigned 1540–1545), briefly interrupted Mughal rule. Humayun's exile in Persia established diplomatic ties between the Safavid and Mughal Courts, and led to increasing Persian cultural influence in the Mughal Empire. Humayun's triumphant return from Persia in 1555 restored Mughal rule in some parts of India, but he died in an accident the next year.