Altamgha Jagirs under the Jagirdari system of the Mughals were the lands which were given to Muslim nobles in their family towns or place of birth. In the Jagirdari system involved assignment of revenue of a particular territory to the nobles for their services to the state.
Iitutmish , the Sultan of Delhi, was contemporary of Mongol leader Chengiz Khan. In 1221 A.D., there was a danger of expected attack of Chengiz khan on Delhi.
Under the rule of the Vijayanagar empire, irrigation became prominent. The development of irrigation took place mainly during the rule of Deva Raya I. New tanks were built and dams were constructed across the river Tungabhadra.