Historical clue formulations

• Central Asia's ___ Mountains — 2021-07-25
• ___ Mountains, range in Russia and Mongolia — 2020-07-25
• Asia's ___ Mountains — 2018-02-07
• ___ Mountains (Asian range) — 2012-10-03
• Central Asia's ___ Mountains — 2006-04-19
• Russia's ___ Republic — 2004-08-12
• Kazakhstan's _____ Mountains — 1995-04-05