A. because they had to dig terraces into the mountain side which helped a lot with farming.
<span>Great Depression lead to the decline in dual federalism. </span>
Mao Zedong's Great Leap Forward included "<span>b. larger collective farms," since the idea was to have almost complete government control over most industries. </span>
A would be the best choice
Tricameralism is the practice of having three legislative or parliamentary chambers. The term was used in South Africa to describe the Parliament established under the apartheid regime's new South African Constitution of 1983.
https://en.m.wikipedia.org/wiki/Tricameralism