Internal Macedonia-Еdirne Revolutionary Organization or for short VMORO in Bulgarian, was created in Thessaloniki in 1893. The founders were Bulgarians from various regions in Macedonia. Their idea was to liberate the Bulgarians living in the Macedonian-Edirne region south of Bulgaria from the Ottomans and to unite it with Bulgaria. The Macedonian-Edirne region was called like that because its territory encompassed from the city of Ohrid, Macedonia through Edirne and all the way to the Black sea.
However, they were all intelligent teachers and doctors who faced the truth that due to political reasons unification was impossible. Instead, they set a new goal to make the Macedonian-Edirne region an autonomous state. IMORO was illegal because it existed on the territory of the Ottoman Empire. In 1895 the Supreme Macedonian-Edirne Committee or in short VMOK in Bulgarian was created on the territory of the Principality of Bulgaria as the legal brother of IMORO. Both the illegal and legal organizations had a common goal – to liberate Macedonia. Unfortunately, both organizations had differing visions in the ways to achieve that goal.