<span>Although hotly debated, it can be claimed that European contact in the Americas benefitted the world in a positive way due to the fact that it created extra opportunity for the current civilizations, as well as opened up an entirely new region of the world that had not been discovered.</span>
It's temple. Vote for me :)
The Gilded Age was an era of rapid economic growth, especially in the North and West. As American wages were much higher than those in Europe, especially for skilled workers, the period saw an influx of millions of European immigrants. The rapid expansion of industrialization led to real wage growth of 60% between 1860 and 1890, spread across the ever-increasing labour force. The average annual wage per industrial worker (including men, women and children) rose from $380 in 1880 to $564 in 1890, a gain of 48%. However, the Gilded Age was also an era of abject poverty and inequality as millions of immigrants—many from impoverished European nations—poured into the United States, and the high concentration of wealth became more visible and contentious
“The political geography of this nation was a product of various treaties and acquisitions that eventually resulted in the country extending from the Atlantic to the Pacific Ocean.”
So the answer must be:
C.) The United States gained the area between the Atlantic Ocean and Appalachian Mountains from the original thirteen colonies in 1770.