We analyze the relationship between food security and trade, focusing on food importers' exposure to sudden market failures from relying on a narrow range of international suppliers. We compute a bilateral import penetration index (BIPI), which gauges the degree to which a country depends on...

Britain contrary to received wisdom was not a free trader for most of the 1800s and, despite repeal of the Corn Laws, continued to have higher tariffs than the French until the last quarter of the century. War with Louis fourteenth from 1689 led to the end of all trade between Britain and France...