Who was president when the first southern state seceded from the union

How will thinking on the margin increase the chance of long-term success for your business, even if additional competition enters your community?

Sole i will mark brainlist to who answer

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.