Why did Austria Hungary seek German support before invading Bosnia?

Austria-Hungary looks for German support before attacking Bosnia is on the grounds that it speculated that Russia would go to Bosnia's annihilation. The country began world war I, and what two countries raised the contention Austria-Hungary yet Germany and England heightened it.

the reason whyy Austria Hungary seek German support before invading Bosnia was: it suspected that russia would come to bosnia's defeat If Russia came to assist Biosnia, Austria-Hungary will be millitaryly overpowered. So, they seek Germany to provide a back up protection in case that happen