Why was the mass production of military vehicles and ships a key factor in the country's war effort?

What country aided north korea in the korean war?

Which statement best describes standard oil in the late 1800s? standard oil controlled only a small number of the nation’s oil refineries. standard oil was a single business that operated in a small region. standard oil controlled only the means and methods of oil production. standard oil owned ninety percent of all oil refineries in the united states.

Which statement describes the impact of the 21st amendment?