Ante Trumbić was one of the most significant politicians from the late 19th and first half of the 20th century Croatia. After graduating from Law School, he started his political career by working in the Municipality of Trogir, after which he will take leadership over Dalmatian, and even Croatian politicians altogether. While studying in Zagreb, Trumbić, influenced by the ideas that originated from Ante Starčević's party, was blaming Austria for the disastrous economic situation of Dalmatia. In the spirit of the philosophy introduced by Ante Starčević, and in partnership with Frano Supilo, he embarked on active creation of the new philosophy which was supposed to gather all supporters against the Austrian authorities. The politics of the new frontier will gather allies of the new, more liberal politics of party. First and foremost, Trumbić wanted the liberalisation of party to be based in cooperation with Serbs, in order to prevent the serbian-austrian cooperation which was contrary to Croatian interests. The merits of this philosophy are contained in the claim for re-incorporation of Dalmatia, which represented conditio sine qua non. After F. Kossuth and his party gave up the idea of coalition against the politics arising from Vienna, all the success of resolution signed in Rijeka began to die out. In the midst of war events, the partnership with Serbs had convinced Trumbić and Supilo into the Yugoslav conception as a solution to the Croatian question. During Great war and after series of negotiations with the Serbian government, Trumbić has sought recognition of the equality of the Slavs from the Monarchy, as well as the preservation of the peculiarities of Croatia. He has never let go of his initial ideas in the understanding of the tri-national people and preserving the specificity of the Croatian „tribe“. That is the reason of his efforts in fighting for federal regulation of the State, for which he thought would save Croatia from inferiority in this new relationship. Trumbić did not give up active politics because of the resentment he felt towards the new government, and in his later years he took the role of a mentor to many politicians who will continue fighting for the unresolved question of Croatian politics.