What role did slavery play in Mississippi's plantation economy? O It was the basis for creating the wealth of plantation owners O It was the basis for creating costly burdens for most plantat O It was a relatively small source of labor for plantation owners Olt led to the plantation economy losing importance.​

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.