During the Civil War, Harriet Tubman was a nurse on the battlefield. a spy for the Confederacy. a railroad employee. a spy for the Union.

What did president roosevelt do to aid panama in becoming an independent country? a. he negotiated a peace treaty with nicaragua to purchase the land. b. he invaded colombia to establish a us base for defense. c. he placed warships around panama to block sea lanes. d. he used dollar diplomacy to block imports to nicaragua.