Answer:
union leaders negotiating on behalf of a group of workers
The best and most correct answer among the choices provided by your question is the second choice which is "railroad tracks."
<span>By 1860 the Midwest and the East were united by a network of railroad tracks.</span>
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Americans tried to civilize the Native Americans through the Washington Administration who embraced a program to civilize native people, transforming Indians from tribal peoples into individuals who could be easily adopt the ways of another culture into American Society. The program promotes commercial agriculture, Christianity, an alteration in the gender-based divisions of labor among Indians and most importantly private ownership of land.
C Santa Fe forces first met
Johannes Gutenburg created the printing press during the renaissance. It was important because it made the mass production of printed materials possible. It also lead to a much wider dissemination of knowledge and literacy throughout the socioeconomics classes.