Complex sentence: Internationally the Depression in the USA led to a rush towards protectionism, as each nation attempted to defend its own economic interests; by November 1932 every European country had increased tariffs, or introduced import quotas, to prevent further damage to their domestic economies.
Split into simpler sentences: Internationally the Depression in the USA led to a rush towards protectionism, as each nation attempted to defend its own economic interests. By November 1932 every European country had increased tariffs, or introduced import quotas, to prevent further damage to their domestic economies.