Explain the role of a cultural hearth in the spread of cultural traits through diffusion.

In the ancient past, in a region called a cultural hearth, big civilizations started. Cultures disperse (diffused) from these regions outward, brought by persons engaged in commerce, transport, conquest or immigration. People would not follow the cultural trend in the area outside the region (yellow on the map).

Explanation:

what events in mexico's history might explain why the country continues to have difficulty improving social justice and economic opportunities for all people?