When the English came here they did so AFTER the Spanish, French and Portuguese. Heck, they were even behind the Scots! (Note: Acadia was co-founded under Scottish and French authority).
Before there was any serious European settlement of the Americas, the Pope divided the place between areas of Spanish and Portuguese control. Accordingly, irrespective of what the Indians may have been thinking about things, America, as a part of Western Civilization, started out as a unified state!