Hey!
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The map that is given gives you a hint to what the answer is. On the legend it states the hint, "people per km²". This tells us that the map shows the population density in South America. A population density map shows which areas have the most people to least people.
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Hope This Helped! Good Luck!
Indians- india virtually clothes the entire world, cotton textiles, mathematics, numerals, and invention of zero.
Malays- most intrepid sailors of the time period, many delivered goods from South China to East Africa, spices cloves ,nutmeg, & mace.
Chinese- champa rice, printing, gunpowder, Daoism, Buddhism, compass, silk improved in india, middle east, north africa and islamic spain. Discovering a silver mine as well as gold.
The Transcontinental Railroad was also instrumental in putting thousands of people to work, and also they were instrumental in transporting cattle and resources in much more efficient ways.
There was a Vietaminazation order of the Richard Nixon presidency throughout the Vietnam War to end U.S.
The Back Death wiped out 3/4 of Europe. This caused Europeans to become less reliant on the Church. One of the cause of The Black death was movement on the silk road by many different people with diseases and infections.