Dee ihe na-aga n'ihu maka paragraf a - E ketara ókèala ahụ site n'ókèala ochie nke Peasia na USSR, nke buru ibu n'ụdị ya ugbu a n'oge 19th Century mgbe mmeri Russia nke Central Asia
na mgbakwunye ya na Khanate nke Kokand na Emirate nke Bukhara na 1865-68. Na 1869 Peasia na Russia kwekọrịtara na osimiri Atrek ga-abụ ókèala dị n'etiti ha. E gosipụtara oke a wee gbasaa n'ebe ọwụwa anyanwụ ruo n'akụkụ Ashgabat na 1881 na-esote ọganihu ndị Russia n'ime ala Turkmen, wee ruo na ókèala Afghanistan na 1893; delimitations dị iche iche nke ókèala a mere n'afọ ndị sochirinụ. E mere obere mgbanwe ndị ọzọ n'ime oge 1954-57 mgbe Iran na USSR (dị ka ha dị ugbu a) kwenyere ịkọwapụta ókèala ha nke ọma, gụnyere mpaghara Atrek delta nke gbanwere kemgbe ahụ n'ihi mkpụmkpụ nke Oké Osimiri Caspian.