The spirit of Liberalism or the spirit of Unity perhaps. Both liberalism and unity among nations were at first the main post ww2 ideas but were soon abandoned with many repressive governments found especially in Eastern Europe, as well as the split of Europe into two blocks and the beginning of the cold war.
America's economy grew by more than 400% between 1860 and 1900
Technological advances, expanding population, improved transportation,
financial innovation, and new business practices combined to fuel this
economic growth
"Titans of Industry" like John D. Rockefeller, Andrew Carnegie, and J.P.
Morgan built monopolies and revolutionized business practices
Laissez faire ideology called for little or no government regulation of
economic affairs
Unskilled urban workers did not share in economic gains, instead
enduring great poverty
Answer: I think the main idea is to show what struggles families faced during the Great Depression. Also, to especially show the struggled children had to face working for their families.
Explanation: Buddy Blankenship starts the paragraph by saying "I told my dad I wasn't going to school anymore". This shows that the author was a child when he started working in the mines with his father. He goes into detail on the struggle he faced, ie, "We got up at 5 in the mornin'" and "We'd work about six hours a day, seventeen hours". This kind of work is grueling and awful for a child.
The question isn't complete and you might want to ask this in the math section.
But just to help you out, 3x means 3 times whatever "x" is.
