Marco Polo was a Venetian merchant who travelled the Far East reaching the empires of China and Mongolia. Along with his family, interacted with the emperors of both countries and was believed that he was once a special guest of a Chinese emperor during his travels. His voyage made the Europeans know more about the lands at the Far East of the globe and became vital for trade and industry.
WWI was started because a Serbian nationalist assassinated archduke Francis Ferdinand and acting like a friend who is in a fight Germany jumped in and held Serbia responsible for the assassination starting WWI. The effect s it had on European countries were the collapse of their economies and wanting Germany to pay war reparations mostly to Britain and France totaling to 33 billion dollars this is when the Great Depression started after the stock market crash and the failure of banks.
Generally speaking, they kept their forts in "Ohio Valley" after, since much of the land was still contested from the Treaty of Paris.
Answer:
You were either a free man, a foreigner, or a slave. Athenian society was ultimately divided into four main social classes: the upper class; the metics, or middle class; the lower class, or freedmen; and the slave class. The upper class consisted of those born to Athenian parents. Hope this helps!!!