Which two groups of immigrants made the construction of the transcontinental railroad possible?

What ideas, institution, and causes became the focal points of chinese and islamic resistance respectively to the west in the latter half of 19th century and the first decades of the 20th

How did its location near the sea most contribute to the growth of ancient greece? a.by supplying water for irrigating crops b.by providing easy access to trade routes c.by creating a natural barrier from enemies d.by generating power for watermills

How does smith characterize the colonizing effort and why does he so characterize the effort to settle jamestown?