The tenth amendment preserves the freedom of speech is false. It is the first amendment that preserves the freedom of speech
Answer: U.S. Legal System.
Explanation: Stare decisis is applied to a holding of any case. Whether than to obiter dicta. The U.S Supreme Court has put it as "dicta is all followed if sufficiently persuasive, but, they're not binding." The cases that are due process clauses, these rules are strikingly true of all cases.
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One way in which Americans developed a unique cultural identity after the Revolution was by ratifying the Constitution, which created a true "nation" as opposed to a lose confederation of states, which allowed people to develop a sense of nationalism and "pride" in their country.