Yes. The assassination of Archduke Franz Ferdinand angered Austria. The man responsible for this was Gavrilo Princip , and he shot Ferdinand after his driver made a wrong turn.
No. Serbia declared war on Austria, which caused Austria’s allies to go to war. On July 28, 1914 Austria-Hungary declares war on Serbia.
Yes. Nationalism increased tensions in the Balkan peninsula.
No. Russia's mobilization plan called for an invasion of France through Belgium. Russia was actually Frances ally, this was because they wanted to protect themselves from the powerful German armies.
YES! Alliances caused a chain of events that pulled each country into war. Austria-Hungary was allied with Germany and Serbia with Russia. When war was declared Russia was allied with France, France with Britain.
I hope this helps! :)
