Answer:
Ethnicities.
Explanation:
An ethnic group or ethnicity is a certain social category of people based on the perception of its members that they have a common origin or experience. Members of an ethnic group believe that they share a common history and cultural traditions (such as language or beliefs) that separate them from other groups. An ethnic group can proclaim a nation claiming a territory, or constitute the majority population of a nation state, whose members or citizens similarly have a certain nationality.
The Bonus Army, made up of WWl vets and their families, came marching into Washington to demand that their pensions from the war to be payed early.
The traffic increased as a result of the Louisiana Purchase
