This book lays out, in very broad outline, Belloc's version of European economic history, starting with ancient pagan states, in which slavery was critical to the economy, through the medieval Christendom process which transformed an economy based on serf labour in a state in which the property was well distributed, to 19th and 20th century capitalism. Belloc argues that the development of capitalism was not a natural consequence of the Industrial Revolution, but a consequence of the earlier dissolution of the monasteries in England, which then shaped the course of English industrialisation. English capitalism then spread across the world.