The correct answer is <u>B</u>: adaptations to physical geography
Explanation:
The Aztec chinampas were the floating gardens, small areas of fertile land, which were used to grow crops in the Mexican valley.
The Inca terraces was a method used by Incas to create farmland and cultivate crops and maintain their agriculture system.
As Aztecs and Incas lived in the mountains, they didn’t have enough flat space to cultivate crops, so they had to use these farming techniques to maximize the amount of space on their territories, due to the physical geography of this region.
The agency which helped freed African Americans by establishing schools was Freedmen's Bureau. I hope that this is the answer that you were looking for and it has helped you.
