Causes of WWI

Industrialized nations had modern armies and mass produced weapons

Industrialized nations pursued peace, not war

Industrialized nations gave weapons to random colonies so that they could fight for independence

They believed that new weapons would speed up warfare

Tensions were rising across Europe because of large armies

New weapons were mass produced

Nations knew that war was not an option in the modern age

Members would defend each other

Members would fight each other

Members would trade goods

Members would ignore each other

Austria-Hungary went to war with Serbia, which triggered the alliance system

Austria-Hungary had a peace summit with Serbia

Something other than these things