The economic impact that railroads had on the US was that: A. some states grew in political power
B. immigrant workers saw greater social mobility
C. raw materials and finished goods can be shipped around the country faster and cheaper

C

Explanation:

Railroads made transportation of raw materials and goods possible and made westward expansion much easier.

the term is einsatzgruppen

in his book, the riddle of the rosetta stone, james giblin talks about how there was a young british polymath and physician named thomas young who made a lot of advances on the deciphering of the rosetta stone. he says that even though young made a lot of mistakes because he was working under false assumptions, he also made huge contributions like deciphering three out of the seven symbols (more than anyone else before him). young published his findings and continued his good work but he wasn't able to progress much further due to some unfavorable situations, he still laid the basis for many other scholars and of course for the man who has been generally known to have deciphered it, jean-françois champollion