Interwar period: industrialization index in selected European countries 1925-1938

The early-20^th century is often considered the most destructive period in European history, with the interwar period of the 1920s and 1930s being defined by various aspects including recovery from the First World War, as well as fluctuating political and economic stability. In particular, the onset of the Great Depression in the U.S. created a ripple effect that was felt across the globe, especially in Europe. During this time, all major currencies were connected via the gold standard; however, several European countries had suspended the gold standard to print additional money during the First World War, and conditions had not re-stabilized by the onset of the Great Depression in the U.S. - the given countries would all abandon the gold standard by the outbreak of war in 1939.

Germany

Additionally, American investors withdrew much of their capital from Europe in the wake of the Wall Street Crash in 1929, and the U.S. government ceased all loans to Germany and demanded advanced repayments. The German economy had already collapsed in the early-1920s, and it became dependent on American loans to stabilize its economy and meet its reparation payments - this move by the American government caused a German economic collapse once more, sending the economy into a downward spiral.

Regional differences

For France, its industrial output dropped in the wake of the Great Depression, and it would not reach these levels again until after the Second World War. In contrast, the Soviet Union was largely shielded from the Great Depression, and its industrial output grew significantly in the build-up to WWII (albeit from a much less-developed starting point). For the other three countries listed, output would not reach pre-Depression levels until at least 1934.