This book advances a new theory of why nationalism emerged in the modern world. In particular it explains why nationalism and economic development are closely linked, and why warfare plays a crucial role in the spread of the nation-state system. It is based on qualitative and quantitative...

"The History of Migration in Europe belies several myths by arguing, for example, that immobility has not been the "normal" condition of people before the modern era. Migration (far from being an income-maximizing choice taken by lone individuals) is often a household strategy, and local wages...