Their former political unity long broken, the various segments of the ethnolinguistic category in Angola experienced quite different influences in the colonial period. The Bashikongo, living near the coast, had the most sustained interaction with the Portuguese but were less affected by participation in the coffee economy than the Sosso and Pombo, who were situated farther east and south. All three groups, however, were involved in the uprising of 1961. The Pombo, still farther east but close to the Zairian border, were much influenced by developments in the Belgian Congo (present-day Zaire), and a large contingent of Pombo living in Léopoldville (present-day Kinshasa) formed a political party in the early 1950s. The Solongo, dwelling on the relatively dry coastal plain, had little contact with the Portuguese. They and the Ashiluanda of the island of Luanda, to the south, were Angola's only African sea fishermen.