Answer:
A, it created relationships with latin america and canada.
Explanation:
U.S. lessened interference with Latin American nations. Withdrew troops from Haiti and Nicaragua. Supported Mexico's nationalization of its oil companies. It improved relations between Latin America and the U.S. Lifted the Platt amendment which limited Cuban independence. Supported Mexicans.
The correct answer is - natural selection.
This is a typical case of natural selection, where we have a group of people that have similar physical traits, that are selected and than isolated from any external influence, so with interbreeding they manage to keep their physical traits for generations to come and thus create a population that resembles their initial ancestors.
I think it is D: the spread of the Roman Catholic Church.
