Which feature formed the eastern boundary of the louisiana purchase

mississippi river

rocky mountains

british canada

new spain

Mississippi River

Explanation:  The EASTERN boundary of the Louisiana Purchase was the Mississippi River.  The WESTERN boundary would be the Rocky Mountains.

southerners, for their part, considered brown a terrorist. they felt threatened by northerners' deification of brown and worried about the potential for other, similar armed insurrections.

explanation:

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.