What is the Significance of Marco Polo (give a few reasons)

Marco polo believed to have journeyed across Asia at the height of the Mongol Empire. Upon reaching China, Marco Polo entered the court of powerful Mongol Ruler Kublai Khan, who dispatched him on trips to help administer the realm. Marco polo remained abroad for 24 years.

Social darwinism refers to the the theory that people who succeed in our economic system will one day out compete those who fail. one day the rich will out succeed the poor so we'll that there will eventually be no more poor

Southern secession is the event or issue that historians can gain insight from this excerpt.