What method of communication became extremely important by the end of the nineteenth century because of its use in coordinating rail travel? a. telephone b. pony express c. television d. telegraph

Which of the following statements is true for all european union countries a. they each have their own hereditary monarchy b. they each have their own national currency c. each has its own democratic government d. each practices roman catholicism

The internal combustion engine was an innovation of

When and why did the united states enter world war 2