12. Los países colonizados por Europa en América siempre lucharon por su desarrollo e identidad nacional, pero sobre todo por su
A. creencia religiosa.
B. desarrollo económico.
C. aspiración de libertad
D. defensa de la esclavitud​

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.

Communicating with the dead was common, it wasn’t seen as bizarre or weird,” explains murch. “it’s hard to imagine that now, we look at that and think, ‘why are you opening the gates of hell? ’