Why did president wilson champion the keating-owen child labor law, an eight-hour workday for railroad workers, and other social reforms in 1916?

All of the following were weaknesses of the articles of confederation, except: a) the central government was not permitted to regulate state, interstate, or foreign trade. b) the central government was not permitted to borrow money. c) the central government had little ability to regulate money. d) the central government had no ability to tax.