In the 11th century who set up a Muslim empire known as Sultanate of Delhi.

The next important king of the Slave dynasty was Shams-ud-din Iltutmush, who himself was a slave of Qutub-ud-din Aibak. Iltutmush ruled for around 26 years from 1211 to 1236 and was responsible for setting the Sultanate of Delhi on strong footings.

crop rotation kepy different plants in the soil instead of once constintly. when switching out plants you have different nutrients being absorbed at different speeds and different roots growing differently therfore the spoil and water flow have to adapt and carry fresh nutrients to carry the constant changes that were going on in the soil.

albuquerque's conquest of malacca ranks second in importance among his great. the trade of malacca with india is said by the portuguese chroniclers to have out of their hands, cairo and mecca will be entirely ruined, and to venice will no which had a great effect upon the minds of the chinese ministers