Dee ihe na-aga n'ihu maka paragraf a - N'afọ 1807, n'oge Agha Napoleon, Leopold I Berchtold guzobere ụlọ ọgwụ ndị agha n'otu akụkụ nke château na ebe a na-edozi ihe n'ụlọ anụ. Na September 16, 1908, n'oge ọ na-erule oge Nsogbu Bosnia
, Count Leopold nke Abụọ Berchtold, onye nnọchi anya Austria-Hungary na Saint Petersburg, kwadoro nzukọ n'etiti Minista Mba Ọzọ nke Russia Alexander Izvolsky na Minista Mba Ọzọ nke Austria-Hungary Alois Aehrenthal n'obí ya. Austria-Hungary na Russia kwenyere na esemokwu "Nkwekọrịta Buchlau", nke Austria-Hungary ga-enweta Bosnia-Herzegovina ma, na nloghachi, ga-akwado Russia na mbọ iji mezuo ikike ikike ịgafe Dardanelles megide Alaeze Ukwu Ottoman.