Question: When did the Operation that seized the territories formally claimed by  Manchukuo began
Sentence (from "Bosnian crisis"): The Bosnian crisis of 1908–09, also known as the Annexation crisis or the First Balkan Crisis, erupted when on 8 October 1908, Austria-Hungary announced the annexation of Bosnia and Herzegovina, territories formally within the sovereignty of the Ottoman Empire.
Relevant evidence: No