Original: The major cities are the capital Sarajevo, Banja Luka in the northwest region known as Bosanska Krajina, Bijeljina and Tuzla in the northeast, Zenica and Doboj in the central part of Bosnia and Mostar, the capital of Herzegovina.
Simplified: The capital is Sarajevo, and other important cities are Banja Luka, Mostar  and Tuzla.