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The united states had ties to many other economies in the world, when the U.S economy collapses in 1929, the world is sent into the depression, which Hitler used to his advantage, thus causing the raise of Fascism in the 30's thus resulting in WW2. Unemployment rates skyrocketed when the unemployment occured, banks failed, etc.
Federalism, separation of power , checks and balances and small and large states <span />
Well, number one is impossible. Great Britain was the first country to industrialize; they started the Industrial Revolution in 1780, with it taking full force in 1840. Japan's industrialization happened with the Meiji Restoration, a full 30 years after the formal beginning of the British industrialization.
2) Literally no one ever conquered Japan. Ask the Mongols- they tried. twice. and failed. twice.
3)Japan only has 20% arable land, so that's not much. And even still, the only country they actually traded with until after their industrialization was the Netherlands.
4) Japan, only a couple hundred miles from China, borrowed many aspect of their culture, which explains why Buddhism played (and still does to an extent) a large role in Japanese society.
So #4 is your answer
