Dissapearence of The Indus river valley Civilization?

Theories? Were studing it in my 3rd hour so I was just wondering What all theories are out there?

We've actually discussed this before. While there's no conclusive evidence for the complete cause, it seems to be a combination of things -- civil problems (people moving out of the cities), climate changes (these were global about this time), and other peoples moving into the area.

It's a slow decline -- not an immediate collapse.

en.wikipedia.org...

A Dreadfully Scientific paper on the climate change about 2000 BC and the changes in monsoon patterns:
scholar.google.com...:GWLwUHfG-IwJ:www.ic.arizona.edu/~anth427/427_527a/notes/staubwasser.pdf+indus+valley+civilization+ harappa

I was kind of hoping for something like aliens got to them... lol, At least its rational thanks.