When the US Constitution was adopted the UK monarch still had enough power that it couldn't reasonably be considered a democracy. The exact point when the UK became a modern democracy is open to debate as power gradually devolved from the monarch to Parliament, but US democracy has absolutely been around longer. There's no legitimate historical debate on that.
And very little of the US governmental system was copied from the UK. A parliamentary system is just totally different from what we have.
Yeah, Madison researched every form of government in history, including native American government systems, as the backdrop for his constitutional work. To say we just copied the UK is not a true assessment in any sense.
And very little of the US governmental system was copied from the UK. A parliamentary system is just totally different from what we have.