How have the political affairs of Europe influenced the decisive events of the Twentieth Century?

Militarism, nationalism, and alliances were some of the underlying causes that eventually burst intoWorld War 1 -------------------------	European Power Politics in the Twentieth Century.	The bipolar world arrives. Two opposing ideologies use Europe, as well as the rest of the globe, as a battleground. The Cold War -------------------------
Dictators voice embittered populations while the rest of the world looks the other way.World War 2 results. -------------------------	European Power Politics in the Twentieth Century.	The European Union may finally unify the continent. Could the evolution of the global economy be forcing Europe to unite or lose out to its competitors? -------------------------