Who was the German Chancellor prior to World War I who established the Triple Alliance?

The Triple Alliance was formed by Chancellor Otto Von Bismarck in two stages: 1. Alliance between Germany and Austria-Hungary (1879). 2. In 1882 Italy, which at the time was in dispute with France in North Africa, joined the alliance. Italy's joining didn't really make sense as Italy had claims on Austria-Hungary. The Triple Alliance was not something created in the run-up to World War 1.