History of German foreign policy

The history of German foreign policy covers diplomatic developments and international history since 1871. Before 1866, Habsburg Austria and its German Confederation were the nominal leader in German affairs, but the Hohenzollern Kingdom of Prussia exercised increasingly dominant influence in German affairs, owing partly to its ability to participate in German Confederation politics through its Brandenburg holding, and its ability to influence trade through its Zollverein network.

Source: Wikipedia — History of German foreign policy (CC BY-SA 4.0)