Why is Mongolia so vast in territory but so small in population?

The reason why Mongolia has a small population today is because the population base was small before independence. When it gained independence from China in 1921, the population was only 400,000.

During the Qing Dynasty, Mobei Mongolia was a barren land. The environment was far less good than Inner Mongolia, so the population was small. In order to avoid the threat from the northwest frontier, the Manchu and Qing government implemented the "Manchu and Mongolian family". On the surface, they are as close to each other as one family with the Mongols, but in fact they strictly control the Mongolian population. Usually in a family, only the eldest son can marry and have children, and all other brothers have to become lamas. As a result, the Mongolian population is getting smaller and smaller.

In recent years, Mongolia's economic development has been slow, the country's preferential fertility policies have been cancelled, and the people have also adopted the idea of ??"having fewer children and getting rich faster".