The railroad decreased transportation time across the United States from about six months to roughly "one week," which was incredibly important in terms of settlement and business in the west. <span><span>
</span></span>
A, "I think, therefore I am".
This is a quote from Descartes' book the Discourse on Method.
The practice of vertical integration contributed most to Andrew Carnegie's ability to form a monopoly. Vertical integration is a process of combining different stages of production such as manufacturing, supplying, distributing, retailing, etc, under the umbrella of one company.
Industrialized ...................