Answer: They created Terraces into the mountainside
Explanation:
The Inca dug into the mountain side and created Terraces, which allowed them to filter water down the mountain side, as well as make a steeper ledge, since they did everything by hand, with hand made hoe's made out of branches and stones, they where able to till the ground to plant the seeds. The mountainside dirt was very enriched with minerals, which made it perfect land for farming.
The correct answer is B. Books, hope this helps :)
They created and nurtured them. Like children, the American colonies grew and flourished under British supervision. Like many ... But the American democratic experiment did not begin in 1776.
* they invented the zero and the number system
* they invented the decimal system
* contributed to the valur of pi, alg, trig, calc, etc
many mathematical terms were originated in India
