of the country. In the 20th century, the North also received great migration from the  Northeast , who were working in the rubber plantations of  Amazonas  and  Acre . Skin color / Race  (2006) White (European, Caucasian) 23.9% Black (African) 6.2% Brown  ( Multiracial ) 69.2% Yellow (Asian) 0.49% Red (Amerindian)