What happened shortly after the United States left Vietnam?

After the U.S. had withdrawn all its troops, the fighting continued in Vietnam. South Vietnam officially surrendered to communist North Vietnam on April 30, 1975. On July 2, 1976, Vietnam was reunited as a communist country, the Socialist Republic of Vietnam.

answer; i believe the correct answer is (the willamete valley);

in mcculloch v. maryland (1819) the supreme court ruled that congress had implied powers under the necessary and proper clause of article i, section 8 of the constitution to create the second bank of the united states and that the state of maryland lacked the power to tax the bank.

gibbons v. ogden, (1824), was a landmark decision in which the supreme court of the united states held that the power to regulate interstate commerce, granted to congress by the commerce clause of the united states constitution, encompassed the power to regulate navigation.