No, when Bismarck was in power, he was not the highest person in power in Germany. At best, he could only be regarded as a minister with great power.

The main reason why Bismarck had such great power was that the King of Prussia at the time, and later King William I of the Prussian Empire, completely trusted him and delegated power to him, which made it appear that he had the greatest power.

Although there was an upper and lower house during the Kingdom of Prussia, the members of the upper house were appointed by the emperor, so the monarchy was still supreme. When it was time to establish the Prussian Empire.

The Imperial Constitution stipulates that the King of the Kingdom of Prussia is the Emperor of Germany. He combines military and political power, has supreme power, and can appoint and remove officials at all levels of the Empire. The Prime Minister of the Kingdom of Prussia is the Chancellor of Germany. He is appointed and dismissed by the Emperor and is responsible to the Emperor.

The reason why he became the person that William I completely trusted was that iron-blooded speech: Bismarck, who became prime minister, firmly delivered an "iron-blooded speech" to the parliament in his first speech in the House of Commons on September 26: " The major problems of our time cannot be solved through speeches and majority resolutions...but with iron and blood!" From then on, Bismarck was nicknamed the "Iron-Blooded Chancellor". Then the king said to Bismarck: "I know the outcome very well. They will chop off your head in front of my window at the Opera Square, and they will chop off my head later." Bismarck responded: "Since you will die sooner or later, why A less dignified death? ... It makes no difference whether you die on the gallows or on the battlefield... You must fight to the end!" From this time on, a very special and strong relationship formed between the king and his prime minister.