Brazillians gave many other racial categories, inculding moreno, mulato, neguhino, pretinho. most of these terms do not have an equvialent in the united states. what does this tell you?

Race is a social construct

Explanation:

Brazillians have created and accepted this racial categories; moreni, mulato, neguhino, pretinho. This is a social construct. They can be seen in the United States because socially it has not been created nor accepted.