In 1912, the taft administration sent u. s. marines to nicaragua as part of the policy of dollar diplomacy. this policy was based on the idea that the u. s. government could a. offer economic aid to  european nations in exchange for american use of local  military bases. b. invade any european  nation that threatened the economic interests of american businesspeople. c. use its power to guarantee the profits of american businesspeople in  foreign countries. d. use its power to colonize any nation that refused to trade with americans.