Which was the main way the Incas modified their environment to grow more food?

-an amendment is proposed.

-two-thirds of congress must approve.

-thee-quarters of states must approve.

-the proposed amendment becomes law.

hope this

a social contract.

"a social contract is an agreement between citizens and their leader where the citizens give up certain freedoms in exchange for protection. the constitution of the united states is an example of a social contract."

it   would try making the   president who would the economy get out of depression picked

they change the constitution.