The answer is A.
Rockefeller worked with oil, Vanderbilt did the railroads, Carnegie was leader of the American steel industry, and Astor did fur trade and invested in real estate.
The correct answer to this open question is the following.
The section "The atomic bomb: A controversial weapon" contributed to the development of ideas in the text in the following way.
In this section of the article, the author writes that even today, historians and scholars still debate the idea of if launching the atomic bomb over Hiroshima and Nagasaki was a good idea of President Harry Truman or not. Some say that using the atomic bomb helped to end the war quickly, but other scholars said that the bomb killed so many people and left too much destruction.
The title of the article is "The Bombing of Hiroshima," and was written by author Jessica McBirney in 2017.
Title: Number of hours you are online vs. days of the week.
Vertical axis title: Hours online
Horizontal axis title: days of the week.
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Answer:
The Southern Christian Leadership Conference (SCLC) is a civil rights organization founded in 1957, as an offshoot of the Montgomery Improvement Association (MIA), which successfully staged a 381-day boycott of the Montgomery Alabama's segregated bus system
Explanation: