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Which modern countries are included in Central Asia?

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Modern Central Asia is comprised of five sovereign nations that were formerly republics of the Soviet Union. These countries are:

Kazakhstan
Kyrgyzstan
Tajikistan
Turkmenistan
Uzbekistan

Following the collapse of the Soviet Union in 1991, these states gained their independence and now constitute the region located between the Caspian Sea to the west and the border of western China to the east.12