What system was used by both ancient Mesopotamia and ancient Egypt to make trade easier?

Read the following excerpt from franklin d. roosevelt’s “day of infamy” speech. which line reveals the purpose of the speech?

In what was the 1851 indian appropriations act considered a peace plan according to the federal government

Which of the following describes an effect of world war ll on the united states economy a. automobile companies produced a record number of cars b. many factories had to expand to produce military equipment c. the airplane industry suffered as the allies began using airplanes in combat d. cities with shipyards declined because so many ships had been sent overseas.