After Gavrilo Princip assassinated Archduke Franz Ferdinand of Austria in Sarajevo, Bosnia, the Austrian government invaded the Kingdom of Serbia. Famously named as the Serbian Campaign of World War I, the Austrian government marched up with hundred of thousands of soldiers and invaded the Kingdom of Serbia thus, started the World War I.
Answer:
B
Explanation:
The Alamo bought them time to prepare, and severely slowed down Santa Anna's army due to the length of the battle.
