The 13th 14th and 15th amendments to the constitution were determined by all of the following except

They all had to do with African Americans but there are no options so i cant really help you.

Ifound this on google “the existence of agglomeration economies is central to the explanation of how cities increase in size and population, which places the phenomenon on a larger scale. the concentration of economic activity in cities is one reason for their development and growth.” i hope this you for what your looking for.