One of the unforeseen results of Europe being enmeshed in a system of alliances was that... A.) European alliances created a balance of power that prevented war from ravaging Europe in the first half of the twentieth century.

A.) Nationalist groups were able to gain access to, and assassinate, the heirs apparent for all the major powers in Europe.

C.) European alliances drew more nations into what could have been a much smaller conflict. 

D.) The Japanese would feel snubbed by western powers and respond by bombing Pearl Harbor