They encouraged people to settle because they were looking for an economic opportunity so not A and they mostly thought they were going to get rich from gold, so not B so I would say C
I believe the best answer for this would be D
Explanation: The Mandate of Heaven did not require a ruler to be of noble birth, and had no time limitations. Instead, rulers were expected to be good and just in order to keep the Mandate. The Zhou claimed that their rule was justified by the Mandate of Heaven. In other words, the Zhou believed that the Shang kings had become immoral with their excessive drinking, luxuriant living, and cruelty, and so had lost their mandate.
The Aztec built bridges and causways to get to certain areas without getting wet.
