What were the problems with the articles of confederation, and why did the united states opt for a federal system of government?

The creation of the articles of confederation proved the fact that is was weak, it didn't allow the central government to raise taxes, it led to an increase in state taxes, most of the powers that the current government has in this day and age were given to the state governments, but there wasn't a lot of trading since it was confined to the state, and the states were more or so different than others, different currency, different alliances, which leades to Shay's Rebellion, which raises concern among the colonies that we should opt in for a federal system of government.