Original sentence: The Culture of the Southern United States or Southern Culture is a subculture of the United States that has resulted from the blending of a heavy amount of English, Welsh, Scottish/Scots-Irish culture, the culture of African slaves, Native American culture, and to a lesser degree that of French and Spanish colonists
Edited sentence: The Culture of the Southern United States or Southern Culture is a subculture of the United States that has resulted from the blending of a heavy amount of English, Welsh, Scottish/Scots-Irish culture, the culture of African slaves, Native American culture, and to a lesser degree that of French, French Huguenot and Spanish colonists