The Puritans in New England were not immediately presented with an Indian problem, for diseases introduced earlier by trading ships along the coast had badly decimated the Indian population. Yet when the Pequots resisted the migration of settlers into the Connecticut Valley in 1637, a party of Puritans surrounded the Pequot village and set fire to it. About five hundred Indians were burned to death or shot while trying to escape; the Whites devoutly offered up thanks to God that they had lost only two men. The woods were then combed for any Pequots who had managed to survive, and these were sold into slavery. Cotton Mather was grateful to the Lord that "on this day we have sent six hundred heathen souls to hell."