Why did hamilton believe that the national bank was supported by the constitution?

Alexander Hamilton believed that the national bank was supported by the Constitution because he interpreted the Necessary and Proper Clause as granting Congress the authority to create institutions that could help carry out its enumerated powers, such as regulating commerce and managing the nation's finances. He argued that a national bank would facilitate tax collection, stabilize the currency, and provide credit, thereby strengthening the federal government’s economic power. Hamilton's broad interpretation of the Constitution emphasized the flexibility of governmental powers to adapt to the country's needs. This view was central to his vision of a strong federal government.