Various theories regarding missions activity have prevailed in American Protestantism during different historical periods. An early emphasis on evangelization for individual salvation gave way to concentration on church planting and educational work as bases for the spread of the Christian faith. With the rise of indigenous churches overseas the concept of ecumenical sharing gave continued justification for missionary activity. The Laymen's Commission of Appraisal in 1932 proposed a more radical conception of missionary work which involved not only inter-church development but also inter-faith development, drawing on increased appreciation for non-Christian religions. However, in Charles Forman's words, "the reaction of mission boards showed that the mission theory and theology of the Laymen's Commission was not that of American missions."