A number of political entities were established; the best-known of these was the Kingdom of the Kongo, based in Angola, which extended northward to what is now the Democratic Republic of the Congo, the Republic of the Congo and Gabon. It established trade routes with other city-states and civilisations up to and down the coast of southwestern and western Africa and even with Great Zimbabwe and the Mutapa Empire, although it engaged in little or no transoceanic trade. To its south lay the Kingdom of Ndongo, from which the area of the later Portuguese colony was sometimes known as ''Dongo'', and right next to them lay the Kingdom of Matamba.