Diversity poses fundamental challenges to state-building and development. We study the effects of one of post-colonial Africa's largest policy experiments -- the Tanzanian Ujamaa policy -- which attempted to address these challenges. Ujamaa aimed to create a national identity and consolidate...

We review the empirical literature that studies the effect of ethnic diversity on the welfare state and on individual attitudes. The outcome variables that we cover in the survey are on the one hand public spending, and on the other hand individual attitudes and behaviour, including charity...

Using data from the 1997 and 2002 waves of the German Socio-Economic Panel and from official statistics, I study whether natives are less supportive of state help for the unemployed in regions where the share of foreigners among the unemployed is high. Unlike previous studies, I use...

Using data from the 1997 and 2002 waves of the German Socio-Economic Panel and from official statistics, I study whether natives are less supportive of state help for the unemployed in regions where the share of foreigners among the unemployed is high. Unlike previous studies, I use...

We review the growing literature on the political effects of immigration. After a brief summary of the economics of immigration, we turn to the main focus of the paper: how immigrants influence electoral outcomes in receiving countries, and why. We start from the "standard" view that immigration...