What is the 9th amendment of the bill of rights?

The enumeration in the Constitution of certain rights shall not be construed to deny or disparage others retained by the people.

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.