The Salvation Army was originally founded in England. During the 19th century, the country was gripped by the industrial revolution. Karl Marx considered London with its East-End slums, was the perfect subject for his studies of the proletariat and it was the place for the development of his revolutionary ideology.
At the same time, William Booth was also confronted with the same terrible situation. He realised, that it would need more than just a change of the social circumstances to make a difference. The revolution which was meant by the founder of the Salvation Army is called conversion and targets not only at the material poverty but changes the life of a person completely.