Median Age of the U. S. Population
In 1850 = 20
In 1900 = 23
In 1950 = 30
In 2000 = 35
In 2050 = 39
Which phrase best describes what is happening to the population of the
United States, according to the chart?

A. The "Manifest Destiny of America"

B. The "unification of America"
C. The "democratization of America"

D. The "graying of America"