The Articles of Confederation were the first "Constitution", It gave the State Government more power than the National Government
Shays's Rebellion highlighted the weakness of the Articles of Confederation. The National Government couldn't help the problem that was occurring within the State. This means that there needs to be people who can help during a time of a major crisis. So the National Government should have more power.
A new and improved document replaced the Articles of Confederation. This document was called The U.S. Constitution.