The loyalists (British colonists) will resent the American colonists. and the American colonists the same.
In political science, a "nation" refers to a group of people who feel bound into a single body by shared culture, values, folkways, religion and/or language. A "state" just refers to a patch of land with a sovereign government. States often coincide with nations (and are called "nation-states," but not always.
To them they were considered outsiders, immigrants technically are outsiders they come from different cultures in search of a well built environment along with food, water and shelter.