Protestantism
The Second Great Awakening was a Protestant revival movement during the early nineteenth century. The movement started around 1800, had begun to gain momentum by 1820, and was in decline by 1870.
In the west, the definining feature of the modern era is the development of all forces of modernity, i.e., science, reason, democracy, liberty and equality. Medieval is in fact a term that is used to describe a societal period that lacked all these features.
One similarity between the US Constitution and the States' Constitutions is that all of the states have a supreme court, congress, and executive office.