Which country closed its ports to farmers?
A. Spain
B. France
C. England

It's lithogenous i believe of course i looked it up.

Humans have survived and thrived in mexico city by using technology to create greater access to land. when the spanish conquered the aztec capital, tenochtitlan, in the 16th century, they built mexico city by draining the lakes and filling in the lake water to create more arable land for agriculture. this technique of land reclamation has continued to be fundamental to human civilization in mexico city. 

Intrusion is the best answer and the newest form.

Ithink this answer here is a or d