I believe the answer is: <span>. A. Islamic expansion into India was facilitated by both Islamic merchants and conquerors.
Cultural assimilation happened when both these merchants and conquerors conducted their business on foreign land.
For merchants, they spread muslim teachings through networking and building partnership with foreign people. As for conquerors, they usually legally require the people that they conquered to follow the empire's official muslim religion.</span>
Tigris and Euphrates
are the readily available water resources that was crucial for the development of Mesopotamia
Explanation:
The region in the south west Asia Mesopotamia was a fertile plain and it was surrounded by mountains, plains and rivers. The rivers in this region provided the route to travel and the two rivers Tigris and Euphrates was very much needed to the development of Mesopotamia.
They made arrangements such that they can drain the water for irrigation from the water sources which were readily available. These rivers form many tributaries and they irrigate the fertile plains and provide water for agricultural purpose.