The United States Was Called The United Colonies Until Sept. 9, 1776 Michael Lane Smith September 10, 2015 at 09:18 AM History Image via National Archive On Sept. 9, 1776, the Continental Congress formally changed the name of their new nation to the “United States of America,” rather than the “United Colonies,” which was in regular use at the time, according to History.com. Read More Show Less michael lane smith Richard Henry Lee United Colonies United States
