The Aztec created chinampas:
to provide water for their crops
to create fertile farmland
...more land for farming
Aztec people created a new way to create farmland called chinampas.
Chinampas were rectangular areas of fertile land to grow crops.
The Aztec people constructed chinampas on the lake to grow crops like maize, beans, squash, etc.
It provided regular water for crops to grow.
Thus option A, B and D are correct answer.
Learn more about chinampas here;
brainly.com/question/1621254
