Zambo (Spanish: [ˈθambo] or [ˈsambo]) or Sambu is a racial term to refer to people of mixed Amerindian and sub-Saharan African ancestry.
The equivalent term in Brazil is cafuzo (Portuguese: [kɐˈfuzu]). However, in Portugal and Portuguese-speaking Africa, cafuzo is used to refer to someone born of an African person and a person of mixed African and European ancestry.
In South America, Indigenous peoples comprise the Pre-Columbian peoples and their descendants, as contrasted with people of European ancestry and those of African descent. In Spanish, Indigenous peoples are referred to as pueblos indígenas (lit. 'Indigenous peoples'), or pueblos nativos (lit. 'native peoples'). The term aborigen (lit. 'aborigine') is used in Argentina, and pueblos aborígenes (lit. 'aboriginal peoples') is commonly used in Colombia. The English term Amerindian (short for "Indians of the Americas") is often used in the Guianas. Latin Americans of mixed European and Indigenous descent are usually referred to as mestizos (Spanish) and mestiços (Portuguese), while those of mixed African and Indigenous ancestry are referred to as zambos.
It is believed that the first human populations of South America either arrived from Asia into North America via the Bering Land Bridge and migrated southwards or alternatively from Polynesia across the Pacific. The earliest generally accepted archaeological evidence for human habitation in South America dates to 14,000 years ago, and is located at the Monte Verde site in southern Chile. The descendants of these first inhabitants would become the Indigenous populations of South America.