Abadai taiji, the leader of the Khalka Mongols of the north of the Gobi, also proceeded to the city to accept the Law from the Great Master. The Third Dalai Lama died in Inner Mongolia in 1588, and the Fourth Dalai Lama was born in the family of Altan Khan. The preaching of Tibetan Buddhism soon spread all over Mongolia, even reaching Manchuria, where eventually the Manchu imperial household was converted. As a result, a unified system of leadership was established in the ecclesiastical world of Outer Mongolia. The dynamics of religious and political unification was very important to the history of Mongolia.
Religion sometimes has a more powerful influence on human life than does law.
The conversion of a nation to a certain religion means that its people will accept that religion's principles as basic to their pattern of life. When the Mongolian-Yuan Khans were converted to Buddhism, the religion was common only among the upper class, and its influence was much weaker than in the late sixteenth century, when the whole Mongolian nation received Buddhism as its faith. After the collapse of the Yuan Dynasty, the Mongols suffered extensively from both foreign invasion and internal tribal wars. As a result, the people felt that life was vain and sorrowful. Following the second conversion of the Mongolian nobles, they began to regain hope for peace and gained a deep faith that provided them comfort.