According to Frederick Jackson Turner, why did English ideas about government change when brought to North America

Frederick Jackson Turner, when he created the Frontier Thesis, thought that all the Colonists departed from Great Britain (and other European countries) with their old ideas, customs and ways of thinking that, when they reached the new American continent, had to be left behind in a wild land, hard and full of new challenges. This change of the civilization of Europe, to live in the Colonies, according to Frederick Jackson, was what formed the American spirit, a new way of thinking, full of courage and desire to conquer that new land. All that the Colonists knew, changed, from the social order (for example, they abandoned feudalism) to their forms of governing (democracy replacing the monarchy), including religion (the Great Awakening), separating Americans from British.