How did guatemalan policy most affect u. s. interests? a. guatemala had a large american expatriate community. b. u. s. companies owned a large proportion of guatemala’s land. c. guatemala had vast oil reserves desired by u. s. companies. d. the united states feared guatemalan influence in el salvador.

I believe the answer is: U.S. companies owned a large proportion of Guatemala's land.

This mean that every decision that made by Guatemalan politicians could affect the the total income/profit that united states would receive from Guatemalan land. This make united states has a strong incentives to influence the political environment in Guatemala.

 C. Guatemala had vast oil reserves desired by U.S. companies - since it is the only oil-producing country in Central America.