They actually don't know for sure what led to the decline but a lot of people believe that the Aryans invaded and conquered the Indus Civilization which would make sense because they were the next people group to live there. I hope this helps!
You are from the U.S.A. The Women's Auxiliary Army Corps is a part of the US military.
If you are a historian who is interested in learning about the day-to-day activities of life at the imperial court of Japan, you should look first at <span>the diary of a samurai warrior, since this is the most likely to have been recorded in every day.</span>