Which of the following statements about the population of the Americas is most true?
a. Most estimates are approximately the same.
b. The early 20th-century estimate of 8.4 million still seems the most accurate.
c. The population of the Americas is easy to calculate.
d. North America was more densely populated than Mesoamerica or the Andes.
e. The population estimates of the Americas continue to be revised upward.
Answer: E