Which event led a “Powderkeg“ in Europe and led to the start of World War I?
- Russia joined a war between Austria-Hungary and Serbia.
- Austria Hungary declared war on Serbia due to ethnic uprising.
- Archduke Franz Ferdinand was assassinated by a Serbian nationalist.
- Archduke Franz Ferdinand stopped a revolt of Serbian nationalists.
After Ferdinand was assassinated, Austria-Hungary declared war on Serbia, who the British where allies with, so the British declared war on Austria Hungary, and so on and so forth
