The third episode of "Axis Powers" talks mainly about how Germany and Italy were forced to pay reparations to France after the first World War (for those of you who don't know, this was a condition under the Treaty of Versailles). The collateral, of course, was territory owned by the two nations. Immediately, some serious problems should become apparent.- While post-WWI Germany favored an industrial economy (albeit a little late on the world stage), if their land was ever seized they would still have room to build new factories elsewhere. That said, quality of life would suffer from the inevitable mass-migrations that would follow, just like what happened in the real industrial revolution.
- Post-WWI Italy, meanwhile, could only try to maintain an agricultural economy, which meant if they were to lose their most coveted land, they'd not only suffer from migration effects, but significant GDP losses as well due to being able to grow less and less with each successive takeover.
If you think about it, Italy was screwed from the start. Italy did have a rather satisfactory economic strategy, but if France started taking land, there would be no way for it not to fail. It would go like this: Italy would fall behind in payments due to internal economic losses. Someone (most likely France) would take Italy's land, causing the successive year's harvest to diminish. Italy would not be able to make that year's payments. More land would be taken, and the next year's GDP would fall ever further. Rinse and repeat.
No wonder Italy went to Germany for a job.
This is one of the major problems hard to address in macro-economics: momentum works both ways. On the one hand, if growth starts, then the following years will see an acceleration of said growth in a sort of chain reaction. However, if a recession begins, then it will only continue to increase in magnitude year-over-year due to cycles not unlike what we see above. Generally, it will be a non-market factor which causes the starting or stopping of a growth period or a recession period. This could be due to a national tragedy, a government movement, a technological revolution, or all sorts of things.
That said, the most important thing to remember is that, if we're entering a recessionary period, the ultimate enemy is time. If we can reverse it before the fiscal year is up, then we're good. Now, that almost rarely happens, but it is a good goal to set.

