2. In 1885 Alexander Graham Bell helped set up a company to build
A.power stations.
B.long-distance telephone lines.
C.sewing machines.
D.the transcontinental railroad.

3. Without the Bessemer process, Americans might not have been able to create __?
A.train engines.
B.sewing machines.
C.the Morse code.
D.the Brooklyn Bridge.

ability to communicate with a moving train improved railroads by
A.helping avoid collisions.
B.allowing passengers to call home.
C.keeping trains "on time."
D.increasing profits.

5. Thomas Edison and George Westinghouse both worked wonders with __
A.steel.
B.the telegraph.
C.mail delivery.
D.electricity.