I would say either A or D, hope I helped, sorry if I didn't!!!
Answer:
From the beginning, then, the building of the transcontinental railroad was set up in terms of a competition between the two companies. In the West, the Central Pacific would be dominated by the “Big Four”–<u>Charles Crocker, Leland Stanford, Collis Huntington </u>and<u> Mark Hopkins.</u>
Free soilers or free staters
<span>uniting under a new Confederate government.</span>