Question 43058
Population density = (Total number of people)/(Total land area)

In the year 2000:

In Asia, Population density = {{{4028000000/(17400*1000)}}} = 231.4942 per sq. miles.


In North America, Population density = {{{30500000/(9400*1000)}}} = 3.2447 per sq. miles.


Now, you can easily compare.
The population density in North America was very sparse in comparison to that in Asia in 2000 A.D.