6th grade history I mark as brainliest please do number 18

Which fact would this be, and how might you verify the truth?

Mississippi, florida, alabama, georgia, louisiana, and texas all seceded from the union. true or 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.