Answer:
C
Explanation:
I'm not 100% sure, but if your notes dont say anything else, then that would be my best guess. Define what the Cold War was and you should get the correct answer.
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!
I believe it's the legislative branch.
