Did the founding fathers make the best choices for the united states

Areal estate salesperson is often approached by home buyers of a particular race. his usual practice is to show them homes in neighborhoods where most of the residents are the same race as the buyers. he avoids showing these buyers properties in integrated areas. this is called:

Select the phrase that best describes "race."a. religiously distinct b. different species c. socially constructed d. factually accurate

What is the cause of their extinction