To avoid individual citizens having too much power, particularly the executive becoming monarch, just like the British system of government at the time in which the King or Queen is the supreme ruler. The Framers of the United States Constitution believed that they should establish a republic. This will allow supreme power to be wielded by the general citizens and their elected representatives in the Senate and House.
Hence, the right answer is "Because the framers of the US Constitution were concerned about citizens having too much power, they established a republic."
The Scientific Revolution led to the creation of new knowledge systems, social hierarchies, and networks of thinkers. It also affected production and distribution.
