How many presidents oversaw the conflict with Vietnam?

In critical thinking, what is the one resource that the human desire never surpasses the available amount? a)drinkable water b) air c) money d) oil

The factory system of the early-19th century caused a) a decrease in farm production. b) an increase in rural population. c) an increase in urban population. d) high unemployment in other areas.

Whose plan centered on keeping the federal budget balanced, instituting tax cuts, and developing public works projects?