In 1854, the controversial Kansas-Nebraska Act, split two
existing political parties the Whig party and Jacksonian Democrats and led to
the creation of the Republican party. Kansas-Nebraska act overturned the Missouri
compromise and allowed settlers to decide whether slavery would be allowed in
their state. This led to the creation of the Republican party founded by anti-slavers
whose primary objective was fighting slavery.
The theory that you are looking for is "the Divine right theory".
This theory claims that only certain people who were given the divine right to do so can create countries and that royalty is supposed to exist as rulers, without being questioned.
They both controlled all aspects of daily life
