We analyze productivity enhancing public expenditure in a spatial economic model with labor mobility, firm-specific increasing returns to scale, and transport costs. Building on Krugman (1991), Fujita, Krugman and Venables (1999) and Redding (2016), we compare optimal investment and tax policies...

Did breakthroughs in core processes during the Industrial Revolution tend to generate further innovations in downstream technologies? Here a theoretical model examines the effect of a political shock on a non-innovating society in which there is high potential willingness to cooperate. The...