This is a process known as horizontal integration. Carnegie also created a vertical combination, an idea first implemented by Gustavus Swift. He bought railroad companies and iron mines. If he owned the rails and the mines, he could reduce his costs and produce cheaper steel.
The north economy was basied in industrialism and also there economy was based on slaves because the north owned slaved that lived in the south
Answer:
A. David Farragut is your correct answer.
Can I get Brainliest? Thx Peace...
<span>Cite kings and empires <span>of the African continent: Galician
</span></span>