It was Austria-Hungary's quarrel with Serbia that became the first warring conflict that erupted into World War I.
the allied powers (winners) held Germany responsible but Germany austria-Hungary and russia lost and Germany payed reparation . usa said it was unfair
They blame it on Serbia. It was their terrorist organization called the Black Hand that killed him (and his wife).
Austria-Hungary blamed Serbia for the assassination. The assassination happened in Bosnia, which was ruled by Austria-Hungary at the time; Bosnian separatists murdered the Archduke with some assistance from Serbian intelligence officials. The Austrian government, of course, found out about this and was not too happy.
Austria-Hungary placed impossible demands on Serbia.
Archduke Ferdinand, heir to the throne of Austria-Hungary is assassinated by Gvrio Princip, a Serbian from Sarajevo, capital of Bosnia. Austria wanted money or an apology of some sort from Serbia but Serbia would not take blame or give them money. Austria-Hungary said were gana declare war with you if you don't apologize and Serbia basically said bring it on. Serbia was alliences with Russia and Austria-Hungary was alliences with Germany. Now 4 countries are in the war-Austria Hungary and Germany vs. Serbia and Russia. It continued to grow where the allies had allies and their allies had allies etc. The 2 competitors were Allies: Russia, Great Britain, France, Ireland Findland, Serbia, Italy, Romania Central Powers: Germany, Austria-Hungary, Ottomen Empire, Bosnia, Bulgaria U.S. joined the Allies later on their own descision
there was a WW1 because the heir to the throne of Austria-Hungary Franz Ferdinand got assassinated in Bosnia and got the blame but then Austria-Hungary found out that it was Serbia so they declared war on Serbia.
Germany felt threatened by France and Russia because they could just attack and Russia was friends with Serbia
The heir to the throne of Austria was assassinated in Sarajevo by a Serbian student. Austria threatened Serbia with invasion using the assassination as an excuse. Russia threatened Austria because it considered Serbians to be fellow Slavs. Germany threatened Russia because it had treaties with Austria. France threatened Germany because it had treaties with Russia. Britain had a treaty to help France if she was threatened. Would you blame the student or the treaty makers?
an act of terrorism
It was known that the assassination was carried out by members of the Black Hand - a Serbian terrorist organization. The Austrian government believed that the terrorists were supported by the Serbian secret service.
Russia cannot be blamed for World War I. There were various alliances in Europe during the time that would create war due to association. The following alliances existed: Russia and Serbia, Germany and Austria, France and Russia, Britain and France and Belgium, Japan and Britain.