A great way to learn the history of the state you are visiting; is to visit the state capital. About 2-3 hours you can learn how the state government works, and the similarities of other states.
We have visited 5 US State Capitals and 1 Canada Providence Capital. All tours have been free and some we have to go through metal detectors to enter. Most tours are available several times during the day and have a tour guide. We often have the opportunity to have a self-guided tour around the building.