What was the primary purpose of the National Road?

Aging populations can be a problem for developed countries because a) there are fewer younger workers coming into the workforce. b) most older workers demand top-level pay and full benefits. c) many older people are skilled in manufacturing, not technology. d) younger workers cannot find jobs when older people work longer.

How has the united states been influenced by other countries ?

How does mahan’s thesis support the concept of manifest destiny