What is the foundation of the feudal system 

Feudalism was the system in European medieval societies of the 10th to 13th centuries CE whereby a social hierarchy was established based on local administrative control and the distribution of land into units

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.

i dont know the answer sorry but if i knew it i would of told you