(you will get brainliest)
comparative advantage argues that above all else, what leads to increased global production?
select one:
a. lack of regulations
b. supply and demand
c. elasticity of demand
d. specialization

I believe it is B.

However I am not 2000% sure, if somebody here seems to be more confident in their answer, Mark them brainliest and thank them, however, if nobody answers then at least you have my input to help you decide.

The transcontinental railroad provided a means of fast transportation. it cut a 6 month trip into 6 days, created jobs for many people and encouraged immigration. the homestead act played a huge role in western expansion; it allowed settlers to begin a fresh start, and gave them land in exchange for their residence for up to five years and a small fee.