<span>D. It was an ecological transformation.</span>
Columbian Exchange was the introduction of Old World plants and animals into the New World and the other way. An example of this was the introduction of tomatoes and potatoes to Europe.
Answer:
One of the most powerful bankers of his era, J.P. (John Pierpont) Morgan (1837-1913) financed railroads and helped organize U.S. Steel, General Electric and other major corporations. ... However, he faced criticism that he had too much power and was accused of manipulating the nation's financial system for his own gain.
The event that triggered war came at Fort Sumter in Charleston Bay on April 12, 1861 because of uncompromising differences between the free and slave states over the power of the National Government to prohibit slavery in the territories that had not yet become states.
I believe its railroads!
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