Why do justices use precedents in majority opinions and dissents?

he most important type is the majority opinion. In most cases, a majority opinion requires five Justices, unless one or more Justices have recused themselves from a given decision. The majority opinion is important because it defines the precedent that all future courts hearing a similar case should follow.

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federal power is further limited with a system of checks and balances that gives each branch of government a measure of power over the others.

explanation:

frederick william of brandenburg-prussia trained his son, frederick, to be a hardy soldier. but frederick disliked rifle shooting and horseback riding. unlike his father, he was interested in french literature. he enjoyed poetry and music and, like some others of the enlightenment, he scoffed at religion. his father thought him soft, frivolous and unmindful of his duties. and when frederick refused to put his signature on a right to succession, for a few moments his father strangled him.