Evangelicalism and social change

Also in the same book, Kyle writes:

Most evangelisals believed that social reform would grow naturally from the behaviour of converted individuals. Employing revivalism, however, to convert individuals who, in turn, would then reform society had its limitations. By the 1830s, "the dream of a moral Christian society, transformed outwardly by the voluntary efforts of inwardly converted people, began to collapse," writes Mark Noll. Two failures - the treatment of the Cherokee Indians and slavery - contributed to the demise of this individualized approach to social problems.

Both my posts are based around quotes from Mark Noll. So perhaps I should've read his book instead?