What does the term mass production mean?
A system of manufacturing that uses machines to quickly produce large amounts of a product.
The use of many skilled workers to rapidly produce a product. A system of manufacturing that carefully and slowly produces handmade goods.

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.