The correct answer is - D: Fertile Farmland.
The civilizations in South Asia, as well as their major cities, were always located at places that had an abundance of fertile farmland. This usually meant that the major cities were established in close proximity to the large rivers, as their valleys had a lot of fertile farmland.
The main reason why the major cities in this part of the world were built in areas with lot of fertile farmland is because the economy was based on the agriculture. Another reason was the large populations on small areas. So basically, lot of food needed to be produced in order for this societies to be able to survive, and if possible to trade some food for other goods that they didn't had.
The thirteen American<span> colonies declared their independence from Britain in 1776.</span>
Peaceful relations with neighboring American Indian groups and fertile farmland helped Penn's experiment become a success. Philadelphia grew into one of the most important cities in colonial America, becoming the birthplace of the U.S. Constitution.
1.a dog sheds it’s fur to adapt to the heat
2.a camel stores water in its hump due to the heat in the desert
D.) The workers on the canal were attacked during a rebellion in Panama.