Ƙirƙirar wani nau'i mai mahimmanci na wannan jumla IMRO (United) an kafa shi ne a 1925 a Vienna ta hannun hagu na IMRO a 1925.
Tabbas, sigar da ta fi rikitarwa ita ce "An kafa IMRO (United) a 1925 a Vienna a ƙarƙashin jagorancin Dimitar Vlahov, Pavel Satev, Georgi Zankov, Rizo Rizov, Vladimir Pop Timov da Hristo Jankov. "