How have population changes raised issues for americans as they entered the 21st century?

the relocation of freed slaves to africa. garrison was one of the main voices in the anti-slavery movement, publishing his thoughts and the voices of slaves such as douglass in his magazin the liberator, to involve douglass in the political process.

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.