 Nyorai kuenderera kwechikamu chino - Muna 1838-9 chibvumirano chakasainwa pakati pamambo weSakalava naSeyyid Said, Mambo weZanzibar, kupa Said masimba pamusoro pehumambo hweSakalava neAntankarana; chibvumirano ichi hachina kumboonekwa naTsimiaro uye hachina kukonzera shanduko mukutonga pasi. Paakanga ari kuNosy Mitsio, Tsimiaro akaenda kuIle Bourbon kunopedzisa chibvumirano neFrance musi wa5 Kubvumbi 1841 icho chakavimbisa kuchengetedzwa kweFrance kweAntankarana mukutsinhana nekodzero dzezvitsuwa zveNosy Mitsio, Nosy Faly, Nosy Be uye Nosy Komba. Kupindira kweFrance pakupedzisira kwakadzinga Merina, kuchibvumira mambo kuti adzorere guta guru kuAmbatoharaña, asi makore anopfuura 40 akapfuura Antankarana yose isati yadzokera kunyika yacho zvachose. Paakafa, Tsimiaro akavigwa pachikumbiro chake mubako reAnkarana kwaakanga apotera kubva kuMerina. Vamwe vanokudzwa vanonyanya kuvigwa mumakuva echiIslam pedyo neAmbatoharaña. Apo vaFrench vakabvuma kubvuma uchangamire hweMadagascar muna 1862, vakachengeta kodzero yavo yavakati yavanayo yokuchengetedzwa kweAntankarana neSakalava dzavakanga vagadza. Tsimiaro akatsiviwa nemwanakomana wake, Tsialana II, 18831924 uyo akaberekerwa paNosy Mitsio muna 1843. Akabatana nemaFrench achishingaira panguva yavo yekutanga yekurwisa Merina 188385, uye zvakare panguva yekubudirira kwekufamba kwe1895izvo zvakaguma nokugara kweFrance pachitsuwa chacho nokuparadzwa kwoumambo hweMerina. Mwanakomana wake Abdourahaman aizoenderera mberi nekurwa parutivi rwevaFrance panguva yeHondo Yenyika I. Tsialana II akatsiviwa naLamboeny II 19251938, Tsialana III 19481959 uye Tsimiharo II 19591982. 