Why are north and South America considered to have the most diverse societies in the world today

Diversity is related to several different factors such as: culture, race, economics, political views, religion and language - just to name a few. Both South America and North America are continents with large countries that are already quite diverse themselves with all its other countries involved. Both continents are rich in culture and history, and many languages are spoken over there, the geography is complete and unique (jungle, ocean, mountains, deserts etc) and there are people from all races. That's why we can consider those continents the most diverse societies in the world nowadays.