The most dramatic change in agriculture in the south was the invention of the cotton gin. true false

congress also has implied powers, which derive from the necessary and proper clause of the constitution and permit congress "to make all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states.

you didn't list the options. however, a few communist countries today are: the people's republic of china, north korea, and cuba.