The 1830s was the time when evangelicalism underwent a significant change. A great number of middle class people became slave-owners as a result of the economic boom. Thus the evangelicals grew from small sects to large denominations as the number of wealthy converts who came to the churches increased bifold. This resulted in a major shift of viewpoint as they suddenly started to defend the practice of slaveholding. Consequently, women and blacks were relegated from the churches, which put an end of their biracial structure. However, the approaching Civil War did not leave the numerous translators without a job as they had to translate a lot of pamphlets and enlistment leaflets, some of which were to be sent abroad. For instance, the Boston Translation had a hectic time as they had to translate hundreds of articles that were to be posted in the local newspapers. However, while white evangelicals continued to support the slaveholding practices and insisted on the existing hierarchical order, the African-Americans view the war a means of liberation for their enslaved relatives.
Logically, the blacks left the biracial churches in the reconstruction period that followed the Civil War and the denominations that they established would soon become the most influential institutions of black ownership. According to the Social Gospel Movement, the society could only be transformed by the congregations themselves, so the white denominations that were also having a hectic time decided to adopt some of those critical reforms. The post-Civil War period was also marked by a worsening of the racial intolerance as white Christians could not rely on their faith to change social practice, whereas black Christians used the doctrine of Christian equality as an antidote to racist ideology. Strving towards innovation, exhibiting populism and unstoppable creativity are the features that make American Christianity different from its foreign counterparts. This led to the establishment of fundamentalist churches among the blacks and whites, which arose from the bottom steps of the socio-economic ladder. The most notable examples are those of the Church of Christ, the Seventh-Day Adventist, and the Assemblies of God, which underwent a rapid growth at the beginning of the 20th century. For the newly-established religious institutions, one of the most important things was to keep and expand the contacts with foreign counterparts, which is why the L.A. Translation were hired by some churches in L.A.
During the Great Depression of the 1930s those churches continued to flourish, and the resulting movements of the Holiness and Pentecostal indicative of the tensions between rebellion and traditional values. Since the Great Revival those were the most dynamically changing movements. They insisted on accepting members from different races and equality, which was a policy similar to that of the early evangelical movements. In order to guarantee the relevant contacts were directed to the right place they would need the assistance of expert interpreters and translators. The Houston Translation were the busiest people in Milwaukee as their services were among the most sought after. Dwarfed by the mainstream denominations, the smaller churches had to find a means to survive and saving their spiritual and creative energies was one of them. As the 20th century witnessed important changes in the economic, social, and cultural sphere, the major denominations doubled and tripled their fortune and extended their influence to other spheres of life.