History of modern Mongolia
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The modern democratic era of Mongolia started after the Democratic Revolution of 1990, which occurred in the wake of the 1989 revolutions and the collapse of the Soviet Union. After the 1990 revolution, Mongolia underwent a transition from a socialist one-party state to a multi-party parliamentary democracy.
The first free and fair elections were held in July 1990. The bicameral parliament drafted a new constitution in 1991, which was ratified by Mongolia's first president, Punsalmaagiin Ochirbat on 13 January 1992, and put into force on 12 February 1992.