Bayan haka sai a amsa tambayar a baya a cikin wannan harshe kamar yadda aka wuce: Passage: An ayyana Mana National Park a matsayin wuri mai tsarki a ranar 1 ga Oktoba 1928 tare da yanki na 360 km2. An kirkiro Manas bioreserve a 1973. Kafin ayyana wurin tsarkakewa ya kasance gandun dajin da ake kira Manas R.F. da Arewa Kamrup R.F. Iyali na Cooch Behar da Raja na Gauripur sun yi amfani da shi a matsayin wurin kiwon farauta. A cikin 1951 da 1955 yankin ya karu zuwa 391 km2. An ayyana shi a matsayin Gidan Tarihi na Duniya a watan Disamba 1985 ta UNESCO. Kahitama R.F. da Kokilabari R.F. da Panbari R.F. an kara su a cikin shekarar 1990 don samar da Mana National Park. A cikin 1992, UNESCO ta ayyana shi a matsayin Gidan Tarihi na Duniya a cikin haɗari saboda haɗarin farauta da ayyukan ta'addanci. A ranar 25 ga Fabrairun 2008 an ƙara yankin zuwa 950 km2. A ranar 21 ga Yuni 2011, an cire shi daga cikin Jerin Gidajen Duniya na Danger kuma an yaba da shi don kokarin kiyaye
Shekara ta 1928