Abavakashi base-US nabaseCanada baphuthuma eNiagara Falls. Impophoma enkulu kunazo zonke yaseNyakatho Melika emngceleni we-United States neCanada iqhwa ngemva kwesiphepho seqhwa.
Ngokwemibiko, isimo sezulu esihamba phezu kweNyakatho Melika sisuka entshonalanga siye empumalanga kanye nomoya onamandla wase-Arctic osuka eCanada kube nesandla ekwakhiweni 'kwezwe lasebusika'.
Isethi yezitebhisi ezazibekwe ngaphandle nje kwendawo yokubuka zazineqhwa eliningi kuzo futhi zazingakwazi ukusetshenziswa.
Kungokokuqala ngqa kusukela ngo-1848 izimpophoma zaba yiqhwa.
