In 1825, shortly after Ricardo’s death, the first global crisis of overproduction swept over Britain. A second global crisis erupted in 1837 with far more devastating results. It was followed by years of industrial depression and mass unemployment. Stormy class struggles broke out, from which came the Chartist movement, the first mass working-class political party. It was during the depression that followed the 1837 crisis that Marx and Engels were themselves radicalized.