Which of the following would be an effective way for Mexico to decrease the number of its citizens migrating away from the country?

During the paleolithic, hominins grouped together in small societies such as bands, and subsisted by gathering  plants  and fishing, hunting or scavenging wild  animals. the paleolithic is characterized by the use of knapped stone tools, although at the time humans also used  wood  and bone tools.

Earthquake fault lines. map above represent