Why was Eisenhower worried about shock in the world

Which letter correctly labels the mississippi river? a b c labeled map of the mississippi river and surrounding regions.

Which of these innovations led to increased production in american factories in the early 1800s? a. the use of interchangeable parts b. the construction of canals c. the invention of the mechanical reaper d. the availability of electricity

How have changes in transportation affected washington, d. c.