The federal government, under the Articles, was too weak to enforce their laws and therefore had no power. The Continental Congress had borrowed money to fight the Revolutionary War and could not repay their debts.
Entrepreneurs played the role of combining money, ideas, raw materials, and labor to make goods and profits.
some people argue it was over slavery vs. legal rights. the fact of the matter is that both statements are correct; specifically southern states did have major taxes put on their exports (agriculture gained through slavery is their main export) which made it impossible to actually make money. so they decided to leave the union