Which of the following is true of "dollar diplomacy"? [Select all that apply.] Which of the following is true of "dollar diplomacy"? [Select all that apply.] It vastly improved relations between Latin America and the United States. The federal government invested heavily in Caribbean nations as a result of this policy. It was the idea that America should invest in Latin American nations, which would improve their economies while also increasing the profits of American bankers and business people. It helped the United States gain control of more than half the foreign trade in the many Caribbean and Latin American nations