French dominion in the American Bottom ended with the Treaty of Paris in 1763, by which all lands east of the Mississippi were ceded to the Kingdom of Great Britain. British dominion, in turn, was ended by the American Revolution: while the French settlers and local Indians were originally favorable toward the British, skillful manoeuvering by George Rogers Clark won the support of both populations for the Americans. The influence of the Catholic faith may have waned by this time, as Clark addressed the inhabitants of Kaskaskia and Cahokia using traditional religious terms instead of Christian words, and by the early nineteenth century Kaskaskia was home to numerous Protestant churches, such as the Episcopalians, the Baptists, and the Reformed Presbyterians. Nevertheless, the Kolmer residents' church endured: the parish of the Immaculate Conception in Kaskaskia survived the great nineteenth-century flood that saw the Mississippi abandon its banks and leave Kaskaskia an island on the western side of the river, and although the village had fallen to a population of fourteen by the time of the 2010 census, Mass is still celebrated at the church weekly.