The Scientific Revolution and Enlightenment threatened monarchies because people began to examine governments, society, and began to want unalienable rights and a more democratic government.
Explanation:
The Scientific Revolution made people more interested in examining things, whether it was material science or society. It also allowed the Enlightenment to begin, where people wanted a fair society with unalienable rights and democracy.
These popular ideas were against monarchies and people began to oppose monarchs, threatening monarchies in Europe.
In the U.S. House of Representatives and the seats in the House are apportioned based on state population according to the constitutionally mandated Census.
In Columbus's time, everyone thought the Earth was flat, and if you went to the end of Earth you would fall off from Earth and die. But, they did bot know that the Earth was actually round.