2. How did the crop rotation system that developed in Britain during the agricultural revolution increase crop yields?
a. by allowing more land to rest
b. by decreasing nutrients in the soil
c. by ensuring that more of the seeds that were planted actually sprouted
d. by decreasing the amount of land used to grow nutrient-depleting crops

A. southerners underestimated republicans eagerness to end slavery.

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.