Why is Latin America called the melting pot of the world's races?

The aborigines in South America are Indians (yellow race), and then white immigrants from Europe (mainly Latin races such as Spain) flood in to open up farms and colonies. Because the Indians were strong-willed and extremely resisted and rejected whites, white colonists had to traffic black slaves from Africa as labor. During this period, European whites, Indians and blacks mixed with each other, forming a strange racial hodgepodge. Therefore, South America is a melting pot of races.

The current classification is as follows:

Black (Bailey, Ronaldinho).

Indians (not to mention this)

Creoles, descendants of white immigrants, are not mixed (Messi and Kaka are both).

A half-blood, half-white and half-Indian (Ma Naduo).

Murato, mulatto (rivaldo, Carlos).

Sambo, Indian, black (Chavez) hybrid.

Gauchos, Half-Blood and Native Indians (Ronaldo).