Citizens’ lives have greatly improved during the 20th century in terms of income and health, but the uneven pace of improvement has led to substantial cross-country inequality. This dissertation explores the idea that citizens’ well-being is a much broader concept than income. A broader perspective on welfare is important for understanding its evolution during the first half of the 20th century in Europe. During this period, most improvements in living standards did not come from increases in income, but rather from higher life expectancy, less inequality and shorter working hours. This research also shows that historically – in contrast to more recent developments – global differences in income can be accounted for to the same extent by di...