What did john hancock contribute to the founding of the united states?

John Hancock was a signer of the declaration of independence, and contributed to the progress of the American revolutionary war as the delegate to the second continental congress in 1764.

Explanation:

John Hancock was one of the main opponents to the series British tax laws imposed in 1765. Since Hancock was popular in Boston due to his wealth, the locals initiated a series of angry protests when the British seized Hancock's ship in 1968, because he hadn't payed the required tax. In 1774 he was elected president of Massachusetts, and he served a prominent role in the American revolutionary war.  Hancock, as elected president of the continental congress, was the first signer of the declaration of independence.