All of the following were associated with the Central Pacific Railroad except:
OA) Scotch-Irish immigrant labor
OB) nitroglycerine explosives
OC) engineering of bridges and tunnels
OD) the "Big Four"

the british won and the germans couldn't invade great brit

they have different colored collars

(202 bc - 220 ad) dynasty started by lui bang; a great and long-lasting rule, it discarded the harsh policies of the qin dynasty and adopted confucian principles; han rulers chose officials who passed the civil service exams rather than birth; it was a time of prosperity

the commander in chief