Ibicuruzwa byibyuma byateye imbere byateye imbere cyane kuva 1950 byikinyejana gishize, hari ingingo ebyiri zingenzi mubyerekezo byiterambere. Ubwa mbere, imbaraga zibikoresho ziyongera buhoro buhoro, kuburyo byagabanije ingano nuburemere bwibigize ibyubahiro, ndetse bikagabanya igiciro cyumushinga; Icya kabiri, dushingiye ku kuzamura imbaraga, dukwiye kwitondera iterambere ryibikoresho bifite imikorere myinshi yo kurwanya ruswa, kugirango tunonosore igihe kirekire cyibikoresho byicyuma kandi bizigamire amafaranga yo kubungabunga.
