The comparisons between them are
Athens peaceful, spread out, traded all the time.
Sparta military, wars, no trust, no trade, win wars, get more territory.
Athens most lasting effect
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I believe it made them distrust is more of a federalism government. This is where the states have most of the power. Remember, they got rid of it, because it was to hard to pass laws, get money, enforce laws, and even to get military members because they basically all had to be provided by the states.
The first proposal for peacefully unifying Europe against a common enemy emerged after the Fall of Constantinople to the Turks in 1453. George of Podebrady, a Hussite king of Bohemia, proposed in 1464 a union of European, Christian nations against the Turks.[1] However, his proposal was based on the nations' shared religious ideology, and there is no evidence that he viewed their common geographic location as particularly significant.
It caused the rise of totalitarianism that played a major role on causing WWII, as Germany recieved harsh punishment after WWI in the Paris peace settlememt, this left Germany weak and the civilians were outraged and resentful towards their government. Not only were the German violated,the leftover issues such as destruction of infrastructure,the collapse of economy,unemployment,hyper inflation worsened the situation. Desiring for a stronger government,Hitler who lead totalitarianism party rose to power,expansionist policy was adopted and threatened the world peace,which then finally cause Britain to declare war and started WWII
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I need more info to answer