How did the transcontinental railroad affect us commerce?
a. the railroad decreased commerce by making shipping more expensive.
b. the railroad increased commerce by making shipping easier and cheaper
c. the railroad led to major corruption in business, which hurt commerce.
d. the railroad decreased commerce by making trading posts disappear

The 14th amendment overruled the supreme court case of dred scott vs. sandford. the landmark supreme court case determined which of the following points? a.slaves could not be citizens b.non-landowners could not be citizens c.blacks could not be citizens d.all persons born or naturalized in the united states vary differently in citizen status.

The law of increasing costs states that as a country produces less of one product and more of another, there is an increase in the resources needed to expand production of the second product.

Which colonial leader argued that the boston massacre was a fight for american liberty