The Transcontinental Railroad led to the creation of ___ due to varying arrival and departure times of trains.

What was the overall impact of eli whitneys introduction of interchangeable parts?

Which of the following could be seen as a weakness of a two-party system? a. the two-party system limits voters' options in electing officials. b. the two-party system limits debate on issues. c. the two-party system limits the range of solutions that will be considered. d. all of these are weaknesses

Which is not a claim kennedy made? a. the fact that communist cuba is so close to american soil is one reason we need to accelerate our space program. b. his decision to shift the study of space to one of the highest american priorities was one of his most important decisions as president. c. within these last months at least 45 satellites have circled the earth. (i think it's this one) d. the mariner spacecraft now on its way to venus is the most intricate instrument in the history of space science. i need this answer really quick, so .