Assassination of Archduke Ferdinand.
The killing of Archduke Francis Ferdinand
The UN was started in 1945, just after World War II.
the Vietnam war had started
World War Two.
It was the assasination of archduke franz Ferdinand that directly started world war 1
The assassination of Archduke Ferdinand was a major event that led to WW1
Vietnam war
guns
World War 2 was a pretty major event.
The major event was the Twin Towers attack in 2001.
World War I
The Holocaust
It was Germany's invasion of Poland that began World War II.