The incident that triggered the beginning of World War 1 was the assassination of the heir to the Austro-Hungarian throne.
Militancy triggered by the cultural and territorial encroachment resulting in the Creek War.
His assassination (by Gavrilo Princip) is what triggered World War I.
POLAND
He was killed in Sarajevohttp://en.wikipedia.org/wiki/Archduke_Franz_Ferdinand_of_Austria
North Korea's invasion into South Korea triggered the war.
The Assassination of Archduke Franz Ferdinand of Austria triggered the start of the Great War (World War I)
Thecollapsed of the Soviet Union triggered the Cold War
Mexico's wish for Independence triggered by the Grito de Dolores.
The incident that triggered the beginning of World War 1 was the assassination of the heir to the Austro-Hungarian throne.
To bomb Pearl Harbor. This triggered the War.
it was the 2nd world war
the great depression triggered WWI
It would depend on which civil war you are referring to.
It is Canada...
Archduke Ferdinand
because the gun went off