The change began in the appointment by Sujin of shoguns or generals over the military departments of the government. Gradually two distinct official castes arose, those in charge of civil affairs and those at the head of military operations. As the importance of these officials grew, they stood between the emperor and his subjects, secluding him more and more from the people. The mikado gradually became lost to view behind a screen of officialism, which hid the throne. Eventually all the military power fell into the hands of the shoguns, and the mikado was seen no more at the head of his army. His power decayed, as he became to the people rather a distant deity than a present and active ruler. There arose in time a double government, with two capitals and centres of authority; the military caste became dominant, anarchy ruled for centuries, the empire was broken up into a series of feudal provinces and baronies, and the unity of the past was succeeded by the division of authority which existed until far within the nineteenth century. The fact that there were two rulers, in two capitals, gave the impression that there were two emperors in Japan, one spiritual and one secular, and when Commodore Perry reached that country, in 1853, he entered into a treaty with the shogun or "tycoon," the head of the military caste, under the belief that he was dealing with the actual ruler of Japan. The truth is, there has never been but one emperor in Japan, the mikado. His power has varied at times, but he is now again the actual and visible head of the empire, and the shoguns, who once lorded it so mightily, have been swept out of existence. This explanation is necessary in order that readers may understand the peculiar conditions of Japanese history. Gradually the mikado became surrounded by a hedge of etiquette which removed him from the view of the outer world. He never appeared in public, and none of his subjects, except his wives and his highest ministers, ever saw his face. He sat on a throne of mats behind a curtain, even his feet not being allowed to touch the earth. If he left the palace to go abroad in the city, the journey was made in a closely curtained car drawn by bullocks. To the people, the mikado became like a deity, his name sacred and inviolable, his power in the hands of the boldest of his subjects. Buddhism had now become the official religion of the empire, priests multiplied, monasteries were founded, and the court became the chief support of the new faith, the courtiers zealously studying the sacred books of India, while the mikado and his empress sought by every means to spread the new belief among their people.