Ubusanzwe sosiyete zikora amavuta n’ibindi basiga mu maso, zabanzaga kubigeragereza ku nyamaswa mbere yo kubishyira ku masoko.

Kubera ibinyabutabire biba muri ayo mavuta, rimwe na rimwe byangizaga izo nyamaswa byageragerejweho ndetse hakaba ubwo zinapfuye.

Canada yasohotse itegeko ribuza ibyo bintu, risaba ababikoraga gushaka ubundi buryo bw’ikoranabuhanga bwo kumenya ko ibyo bakora nta ngaruka ku buzima bw’abantu.

Canada igiye ku rutonde rw’ibindi bibugu nka Australia, u Bwongereza, Koreya y’Epfo, Umuryango w’Ubumwe bw’u Burayi byamaze guhagarika igerageza rikorewe ku nyamaswa hifashishijwe amavuta y’ubwiza n’ibijyana nayo.

Kugeragereza amavuta yo kwisiga ku nyamaswa muri Canada byahindutse icyaha