How has migration flow to Latin America since 1500 created a complex set of racial identities in the region?

How has migration flow to Latin America since 1500 created a complex set of racial identities in the region? I want to start with why people are migrating there in the first place. In Latin America, there are many more opportunities for people. But, since the 1500s there has been a lot of migration. Of the other ethnic people that descend from other countries are from Asia, Africa, and other European countries. Latin America has what is called a Triple Heritage which includes Indigenous, African, and Iberian. During the Atlantic slave trade, 12 to 28 million Africans were brought into Latin American countries including the Caribbeans, Brazil, and Mexico. So, there have been many different ethnicities for a long time but now people are going to Latin American for the opportunity to have a better life than what they have elsewhere. They are going to Latin America to find better jobs, better work, and a better overall life in this new place. People are also migrating to Latin America because they want their children to have better lives, and bringing then there they are getting to go to better schools. But, once you begin having all of these different people coming into one place all wanting to better their lives. Then all of these different races start to find that people are putting others lower than themselves because they think they are better. It starts to become more of a competition. Which makes it more difficult for more people to live there happily.