VaBritish vakatanga kusvika kuTonga mukupera kwezana ramakore rechi18, apo Captain James Cook vakashanyira zvitsuwa zvitatu pakati pa1773 na1777. Makore anenge makumi mashanu gare gare, mamishinari eEnglish Wesleyan Methodist akauya kuTonga ndokutanga kushandura vagari vechitsuwa kuva maKristu. Muna 1831, vakabudirira kushandura "mutungamiri mukuru" Taufa'ahau Tupou, uyo akazova Mambo George Tupou I muna 1845. Yakanga iri panguva ino (munenge muna 1840s) kuti mureza wekutanga weTonga wakagamuchirwa. Yakanga iine munda wakachena une muchinjikwa (ingave yakatsvuka kana yebhuruu) pamakona mana, uye tsamba "A" (mune tsvuku) uye "M" (mune bhuruu) pakati iyo inomiririra mambo. Paakakwira pachigaro, mambo akatsvaga kuti mureza mutsva uve mufananidzo wechiKristu, uyo waizomiririra hurumende yeBritain.
Makore 1845