Was Gavrilo Princip a angry citizen Austrian sniper Australian soldier or American assassin

Gavrilo Princip was an angry citizen.

Explanation:

Gavrilo Princip was a Bosnian Serb conspirator who killed the heir to the Austro Hungarian Empire on 28 June 1914. He was linked to the Serbian secret organization Black Hand, which had previously become known for terrorist operations.

He was one of many conspirators who wanted as much independence as possible for their homeland, Bosnia, occupied by Austria-Hungary, hoping that this would be possible within the Kingdom of Serbia. The fact that it was Principle who killed Franz Ferdinand was largely coincidental, as several possible assassins involved in the conspiracy had been placed on the Archduke's cortege route in Sarajevo. Immediately after the assassination of the Archduke, Princip was arrested and sentenced to 20 years in prison.

it affected it because the kingdoms (with trade) slowly got richer and richer.

they thought they were   chrstian even though they were roman opening a r religous war and giving people hope