Help! Was German unification primarily the result of German nationalism or Prussian expansionism

It is often seen as the unification of Germany. Nationalism also has a lot to say since they shared a lot of values and language, but Prussia may have something to say, but they also felt a bit like Germany. So would say that nationalism was the driving force of German unification.

explanation:

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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.