Answer:
slaves were freed
Explanation:
Abraham Lincoln passed the law stating all slaves were free and thus states the civil war
Nationalism and imperialism encouraged each nation to pursue it's own in complete for power
In a working economy, it requires labor to attain natural resources to produce other resources. then once a city is built and currency is established, entrepreneurship is required to buy and sell goods. Lastly, capital is required to keep order in the population
I think I do not know for sure, but I believe it was "civilization and enlightenment."
Hope this helps please tell me if it did. ;-)