Which activity is an example of united states using economic influence as a tool of foreign policy

Sanctions and embargo against Cuba in response to communism, sanctions against Iran in response for revolution, those are 2 examples from recent history.

i believe your answer is d)

lee and grant, both of whom held the highest rank in their respective armies, had known each other slightly during the mexican-american war (1846-48) and began their dialogue by exchanging awkward personal inquiries. characteristically, grant had arrived in his mud-splattered field uniform while lee had turned out in full dress attire, complete with sash and sword.

explanation: