(history) Czechoslovakia

self-government

interruption / cancellation

to interrupt / to discontinue, to abort

(anatomy) middle ear - (the cavity in the temporal bone between the eardrum and the inner ear that contains the ossicles, and which conveys sound to the cochlea.)

ringtone

(historical) Bechuanaland -(a former name of what is now Botswana, used until 1966)

(archaic) the interior of a country; within a country's borders

groping in the dark, investigation/struggling/probing without any clues

to grope in the dark, to investigate/struggle/probe without any clues