What was the time and place in history democracy was successful?

How were slavery and indentured labor in american colonies similar

How did southern slaveholders attempt to convince people in the north to support slavery?

Which of these is not a criticism of the concentric zone model? it does not accurately describe cities after the rise of suburban development. it only applies to cities that grew after the development of the automobile. it assumes that inner-city areas will always be repurposed instead of abandoned. it places too much importance on the traditional central business district.