What word sets most closely exemplifies the European political system during the medieval period?

Why don't they build walls around cities anymore? What European explorer was the first to spend the winter in James Bay? Why did World War 2 break out in September 1939? During the 19th century serious exploration of the interior of Africa began to take place What were 3 major difficulties that faced these explorers? Which alliances won World War 1? Where did the word Canada come from? What country used to be called chosen? What is the history of Chinese garter? What was the result of triangle trade? Was the world's first wheel invented by Australian's? Who was the founder of Chinese communist party? Where is worlds largest tin mine? In 1938 this country was Germany's first target? Why is silver important in the world? What is the Kushan Religion? Who wrote Whenever therefore any number of men are so united into one society and whenevery one gives up his executive power of the law of nature there and there only is a political society..? What eventually evolved into the modern Parliament in England? By the 1500s the most important element of African trade was? How many years did it take for colombus reach san salvador? Which country does the word tycoon come from?