Geography Question - Where Did It Happen #1?

Geography Question - Where Did It Happen #1?

Here is the next in a new series of Geography questions... with a different category each day.

Monday - Bodies of Water
Tuesday - Buildings and Structures
Wednesday - Mountains
Thursday - Where Did It Happen?
Friday - Bridges
Saturday & Sunday - Random category

Today's category is Where Did It Happen?

Can you name the event and the city where it happened? Bonus if you can also name the country the city was in at the time this event happened.

Here are your clues:
* This event, which involved a gun and an automobile, effectively started the First World War
* This city is now the capital city of a European country
* This city has hosted the Olympic Games

Please don't cheat by looking it up or seeing what others are posting.

Make your guess in the opinions below.

The correct answer will be given in a few days (Saturday).

Good luck!

Updates
1 y
The correct answer is Sarajevo, where Archduke Franz Ferdinand was assassinated by a Bosnian Serb in 1914. At the time, Sarajevo was in Austria-Hungary. The city hosted the 1984 Winter Olympics, and is now the capital of Bosnia and Herzegovina.
Geography Question - Where Did It Happen #1?
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