Source: OECD Income Distribution and Poverty Database and OECD Economic Outlook Database. Their explanation is based on the emergence of human capital accumulation as the prime engine of growth, replacing physical capital accumulation. Yet, Bertola and Lo Prete (2008) and Bertola (2010) argue that although across countries larger government redistribution is associated with deeper economic integration, globalisation erodes the capacity of governments to redistribute over time. Alesina and Giuliano (2009) show that preferences for redistribution vary greatly among countries. Differences in religion, culture and macroeconomic volatility affect them.