What determines risk-bearing capacity and the amount of leverage in financial markets? Using unique archival data on collateralized lending, we show that personal experience can affect individual risk-taking and aggregate leverage. When an investor syndicate speculating in Amsterdam in 1772 went...

We collect new data on the density of associations in 229 towns and cities in interwar Germany. Towns with one standard deviation higher association density – a common proxy for social capital – saw at least 15% faster Nazi Party entry. Not only associations with a militaristic outlook (such...