When fifty-six men gathered in Philadelphia in 1776 to sign a single sheet of parchment, they launched what has been called the greatest political journey in human history. The Founding Fathers envisioned a republic built on the radical ideals of liberty, equality, and a government accountable to its people. Yet, the nation they designed was far from perfect, and they could scarcely have imagined the vast, continental superpower America would become — let alone a nation whose demographic and political fabric would be woven together by immigrants from every corner of the earth.advertisementRead Full StoryTwo hundred and fifty years later,…