one main difference between the united states constitution and states constitutions is that state constitutions?

One main difference between the United states constitution and states constitutions is that "State constitutions are much longer".

Explanation:

The United States Constitution speaks broadly about the "federal system of government", whereas, the state Constitutions attempt to delineate in detail certain major nuances of the "United States Constitution" in them along with the details of the local governments.

The United States Constitution limits itself to the mentions of only its powers, functions, and limitations. On the other hand, the state Constitutions speak about the state-specific issues and address them in detail pertaining to the laws regarding the issues.