With this treaty was decided that the lands in north and west of the Šar Mountains (Kosovo Vilayet and Sanjak of Novi Pazar) would take Serbia whereas Bulgaria would take the eastern areas of Rhodope Mountains and Struma river. While provinces of middle Macedonia lying between Šar and Rhodope mountains, the Aegean Sea and Ohrid Lake, if not formed an autonomous province, will then e divided between Serbia and Bulgaria. In late September the Balkan League was complemented with other members: Montenegro and Greece. From which Montenegro started the first war on October 9, 1912, then Serbia on October 17, to continue with Bulgaria and Greece, doing so to begin the first Balkan War.