The Independent State of Croatia was founded on 10 April 1941, after the invasion of Yugoslavia by the Axis powers. The state was technically a monarchy and Italian protectorate from the signing of the Rome agreements on 19 May 1941 until the Italian capitulation on 8 September 1943; but the king-designate, the Prince Aimone of Savoy-Aosta, refused to assume the kingship in opposition to the Italian annexation of the Croat-populated Yugoslav region of Dalmatia.