1500- adventisten arbeidersklasse bekering catholicchurch catholicconverts catholics christianity christianityandculture churchhistory dusseldorf(germany) germany greatbritain history intellectuals intellectuelen modernperiod papuanewguinea politicalactivity politicsandgovernment politiekepartijen proletariaat radicalism relations religion religiousaspects religiouslife seventh-dayadventists seventh-dayadventistscatholicchurch socialconflict socialism socialisten sozialdemokratischeparteideutschlands unitedstates workingclass