Mexico's eastern coastline runs along the The
mountain range
extends near the southwestern coast.
cover the country's northwestern
region.
run along Mexico's border with
Central America.

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.

B,c and d are the answers

Ithink the answer is b