Who has benifited from the industrial revolution according to carnegie?

It was the poor people and laborers who benefited from the Industrial revolution according to Carnegie, since it was believed that the shift to industrialization opened up the opportunities for many more jobs for those who otherwise would have been unemployed. 

A.) The 16th Amendment

Explanation:

The Congress shall have power to lay and collect taxes on incomes, from whatever source derived, without apportionment among the several States, and without regard to any census or enumeration.