How did the aryans invasion affect civilization in the Indus River Valley?

One theory suggested that a nomadic, Indo-European tribe, called the Aryans, invaded and conquered the Indus Valley Civilization. ... The eastward shift of monsoons may have reduced the water supply, forcing the Harappans of the Indus River Valley to migrate and establish smaller villages and isolated farms.

Explanation:

i honesty don't know, good luck tho dawg

so, based on the research i've done. the u.s. government were always on a wild goose chase just to take down castro. he then retired his trone to his brother raul in 2008 due to some health issues. so it's obvious your answer would be:

castro had no allies from which he could receive aid.

hope this and have a fantastic day!

                                                    -wolfiewolffromsketch