You asked:

what countries border lake tanganyika

  • The UN-recognised countries bordering Lake Tanganyika are Tanzania, the Democratic Republic of the Congo, Burundi and Zambia.
  • Tanzania
    Tanzania
    Tanzania

  • the Democratic Republic of the Congo
    the Democratic Republic of the Congo
    the Democratic Republic of the Congo

  • Burundi
    Burundi
    Burundi

  • Zambia
    Zambia