He ruled most of Western Europe from 768-814. And in 800 he was crowned emperor of the romans
Greek civilization was affected by their geography because Greece was essentially a bunch of mountainous islands in the Mediterranean Sea . This caused Greece to develop into different city-states each having differences often resulting in waring . Example Sparta and Athens.
The Wagner act is also known as the National Labor Standards act
With war, every country is afraid. They're afraid of possibly being ambushed, becoming in dept, and many other reasons. So by remaining neutral they can sit back and not have to worry about being attacked by any country that's fighting. But that's not always the case now and days. Hope I answered your question correctly.