13. terraces were devices that the ancient mayans built in order to trap silt carried by the
numerous rivers passing through the mesoamerican lowlands. what is this an example of?
(4.3.2)
a. how the mayans were able to travel from city to city to trade
b. technological superiority used to be victorious in warfare
c. how the mayans were using their religion to create prosperity
d. how the mayans were able to convert the landscape to increase agricultural production

What do historians call the political,social,or cultural circumstances surrounding an event?

For in this unit, you read about transitions of power and the formation of newly independent nations in africa, asia, the americas, and the middle east. some of these transitions were peaceful, while others caused long-term instability. why do you think some countries were more successful than others with political transitions? what do you think were the biggest challenges facing newly independent countries? would it have been possible for leaders to prevent these problems before they happened? why or why not?

During the cold war, which of the following groups of countries would have all been"behind the iron curtain"