Which of the following systems of trade were most widely used in ancient river civilizations

It was A. Bartering. Coins weren't existent that far back, international trade didn't exist because no one knew about the continents to the west, and it definitly wasn't free trade. Nothing was ever free.

Explanation:

fearing kabuki could corrupt the nation’s morals, japanese government officials

explanation:

the national morals was so the japanese and the kabuki would stop fighting

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.