What is the economic theory given for the fall of the indus valley civilization? lack of resources devaluation of money falling behind technologically decline in trade

A decline in trade would be the answer.

The Indus Valley Civilization started to weaken around 1800 BCE. Archaeological evidence specifies that trade with Mesopotamia, situated mainly in modern Iraq, and appeared to have finished. The progressive drainage systems and baths of the abundant cities were constructed over or congested. Inscription started to vanish, and the consistent masses and measures used for trade and levies fell out of use.

the topic i chose to write about was " why scuba diving is so popular". the topic is suitable for the audience because it is the easiest to develop and explain, it can be explained in a simpler more conversational manner, it does not require the use of too many technical words, and the final reason for selecting this topic is that it is the one most people can relate to, you might not know too much about scuba diving, but you could probably agree that it is very popular. the purpose of the writing about this topic is to convince more people about the benefits both for the body and the mind that   scuba diving can have on a person. it can you keep fit since it requires a lot of energy when swimming underwater; it also you relax because you forget about the world when you are underwater being mesmerized by the underwater world. i would write this paper in the summer, a perfect time to give scuba diving a try if a person has not done it yet.