Communism
This is an example of central planning in which everything is directed by the government. These types of economies tend not to do well because as the question states the incentive for individuals is taken away.
Hes neve met a natzi utel now
People in the south used slaves because their economy was focussed on things like cash crops (tobacco, cotton, etc.) These crops required a lot of work so farmers and plantation owners could not do it by themselves. So by using enslave persons they could harvest more crops, sell more, make more money, and in return boost the southern economy.
Germany failed to take over Europe
Italy failed to gain land in Europe
Austria-Hungary failed to keep stable, now they don't exist.
Bulgaria failed to gain the land they wanted
Turkey failed to get back at Russia for the *Crimean Wars
*could be a different war not sure