1. They have gone from well thought out essays and some mudslinging to catchy one liners on Tv
Answer:
They returned to St. Louis in September 23,1806
Learning Effect is correct answer.
Learning Effect is a theory that learning it increases to the efficiency of production.
Hope it helped you.
-Charlie
Answer: I believe it would be, "A, the arrival of railroads made El Paso a boomtown and contemporary city."