How did the united states attempt to promote peace in the 1920's?

The system of checks and balances ensures that

The u. s. constitution outlawed slavery. true false

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.