In what ways, and to what extent, did the twentieth century become “The American Century” as Luce contends?

Explanation:

Industrial growth and progressive reform in America in the 20th century. The 20th century was a time of enormous changes in American life. ... Inexpensive books, magazines, newspapers, and improved public libraries, funded in part through the benevolence of Andrew Carnegie, contributed to their intellectual lives

on the morning of  july 21,  1861, general mcdowell ordered the  unionarmy to attack. it was on this hill that  confederate  colonel thomas jackson and his forces held back theunion  troops.