Should one of the High
Contracting Parties be attacked by another Power, the other
High Contracting Party binds itself hereby, not only not to support the aggressor
against its high Ally, but to observe at least a benevolent neutral attitude towards its
fellow Contracting Party.
What MAIN cause does the above passage describe?
A) Militarism
B) Alliances
C) Imperialism
D) Nationalism