Answer:
I think Maya because Maya set of mathematical proved to be most useful. Maya had an advanced understanding of math and astronomy.
Explanation:
The type of Geographic location the humans tend to develop civilizations is the River valleys. They have better access to water and food, therefore that is why humans live near River Valleys.
Mikhail Gorbachev's "perestroika" called for economic and political restructuring. The correct option among all the options that are given in the question is the third option. This is one policy that is also considered as a reason for the breaking up of the erstwhile Soviet Union. I hope the answer helps you.
The answer is Campbell Street