This article uses Aufbau Ost (or reconstruction of the East) of the new German states as a structural model to estimate the possible costs of an Aufbau Ost 2.0 of Ukraine while taking institutional differences into account. Based on three approaches, the model is validated for the new German...

Based on county-level census data for the German state of Bavaria in 1939 and 1946, we use World War II as a natural experiment to study the effects of sex ratio changes on out-of-wedlock fertility. Our findings show that war-induced shortfalls of men to women significantly increased the...