peter's square today as pope francis declared mother teresa st. theresa. the canonization comes 19 years define blessed teresa of calcutta to be a saint. >> reporter: there was a crowd of more than 100,000 under a clear blue sky. the pope described mother teresa as a defender of the unborn, the sir, and the abandoned. in calcutta, india people watched the ceremony canonizing the woman who cared for the poorest of others gathered around her tomb adorned with a single candle. among the faithful they say it only confirms what they already believe. >> when you think of mother teresa what comes to mind? >> i think -- i don't know if active quote right, but she said light one drop of water in the ocean. if you do one small thing, it just ripples out where it causes massive change. her mercy goes beyond borders. (s:reporter the so-called saint of the gutters was awarded the prize for her work with calcutta's poor and sick. two miracles were attributed to mother teresa in order to reach sainthood. she's credited with curing a tumor-stricken calcutta woman, and for