Which of the following is NOT a contribution of industrialists like Andrew Carnegie, Cornelius Vanderbilt, and John Rockefeller?
Select one:
1Their innovations/businesses helped the United States become a world industrial
power
2Their donations to learning and the arts encouraged the building of museums and
universities
3Their focus on supporting workers led to benefits, such as health care and a 5-day
work week
4Their poor treatment of workers led to protests and the formation of labor unions.