Robert Morris Jr. was an English-born American merchant, investor and politician who was one of the Founding Fathers of the United States. He served as a member of the Pennsylvania legislature, the Second Continental Congress, and the United States Senate, and was one of only two people who signed the Declaration of Independence, the Articles of Confederation, and the United States Constitution. From 1781 to 1784, he served as the Superintendent of Finance of the United States, becoming known as the "Financier of the Revolution." Along with Alexander Hamilton and Albert Gallatin, he is widely regarded as one of the founders of the financial system of the United States.