Question

Which event sparked the beginning of World War I?

1. the murder of Archduke Franz Ferdinand
2. the overthrow of Germany's tsar
3. the Russian Revolution
4. when Joseph Stalin became dictator of the Soviet Union

Answer 1

1. the murder of Archduke Franz Ferdinand

Step-by-step explanation:

earliest event of choices provided that can be said to have sparked the beginning of World War I, and often considered to be the primary one