The Inca Expanded the Amount of Arable Land Available in Their

Multiple Choice

The Inca expanded the amount of arable land available in their mountainous home regions by:

A) their construction of chinampas
B) using organic trash as land fill in the swampy lowlands
C) constructing terraces that produced horizontal soil surfaces in the form of steps up the steep slopes of mountains and ridges
D) planting crops that thrived in the salt marshes that were otherwise not productive agriculturally