The name of which of the following countries closely means “country of 40 tribes”?

The correct answer is (b), Kyrgyzstan. The name Kyrgyzstan comes from the Turkic words “kırk” meaning “forty” and “üz” meaning “tribe”. Therefore, the name Kyrgyzstan closely means “country of 40 tribes”.

Kazakhstan is named after the Kazakh people, who are a Turkic people native to Central Asia. The name Kazakhstan means “land of the Kazakhs”.

Tajikistan is named after the Tajik people, who are an Iranian people native to Central Asia. The name Tajikistan means “land of the Tajiks”.

Uzbekistan is named after the Uzbek people, who are a Turkic people native to Central Asia. The name Uzbekistan means “land of the Uzbeks”.