Which imperialistic ventures are you talking about? I thought that we had already established that the Japanese had invaded Manchuria after their economy had already recovered/began to recover. And besides some pre-invasion economic concessions in Manchuria, I can't find any other imperialistic ventures at the appropriate time.
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The imperialistic ventures in Manchuria immediately following the "recovery", which allowed Japan to actually keep it going. Oh, and allow me to complete the quote that you didn't finish:
This resulted in a strong and swift negative reaction from nationalists, especially those in the army, culminating in his assassination in the course of the February 26 Incident. This had a chilling effect on all civilian bureaucrats in the Japanese government. From 1934, the military's dominance of the government continued to grow. Instead of reducing deficit spending, the government introduced price controls and rationing schemes that reduced, but did not eliminate inflation, which would remain a problem until the end of World War II.
So yeah, the short term recovery was followed by long term inflation.
Also, you conveniently ignored the fact that the Japanese Depression effectively began in 1920, when the economy experienced a massive downturn and Japanese intervention failed to make a significant impact. To compare, very nearly the same depression occurred in the US at the same time, was fought with massive spending/tax cuts, and was replaced by a period of massive growth in 1922. So even assuming imperialism wasn't necessary to sustain Japanese growth, the net result was seven years of depression (20-27), two years of "recovery" (28-29), three MORE years of depression (29-31), and a recovery from THAT for four years, followed by the institution of what amounted to a wartime economy. The Wiki article doesn't even mention if the "recovery" was to pre-1929 levels, when the economy was basically in a depression already, or pre-1920 levels, when the economy was actually in decent shape.