Who was Otto von Bismarck's rival?

Otto Von Bismarck's primary rival was Emperor Wilhelm II of Germany. Their conflict arose from differing visions for Germany's future, particularly regarding foreign policy and domestic reforms. Bismarck favored a more cautious and diplomatic approach, while Wilhelm II sought a more aggressive and imperialist stance, ultimately leading to Bismarck's resignation in 1890. This rivalry significantly impacted Germany's political landscape and contributed to the tensions that preceded World War I.