His name is longer by far than the term he helped coin.
John Hector St. John de Crèvecœur was born Michel-Guillaume Jean in Normandy, France. At the age of 20, Jean moved to New France and three years later, after France had lost the Seven Years War (of which the French and Indian War was a part), became a New Yorker called John Hector with an appreciable farm in Orange County.
As a farmer, de Crèvecœur wrote essays he later published in Europe. The Letters from an American Farmer introduced to European readers America, where "individuals of all races are melted into a new race of man, whose labors and posterity will one day cause great changes in the world."
So, that's the "melting (pot)" metaphor applied to North America for possibly the first time. If you want to save time just about every time you reply to an email, Postbox can melt the Archive and Send buttons into one:
›› After you've written and sent a reply, you typically archive the original message? In Postbox, you can get a command that combines the reply's delivery and the original email's archiving into one step.