The case of Marbury v. Madison (1803) has been described as "epochal", and for good reason. The case of Marbury v. Madison established the Supreme Court's power of judicial review. Judicial review is the ability of the Supreme Court to "review a law or an official act of government employee or agent for constitutionality or for the violation of basic principles of justice." This case directly shaped the future of the American public in a positive way: by making decisions that are lawfully correct and in the best interest of the public. This also had some short-term and long-term ramifications, including the decision that declared the legality of the Louisiana Purchase, the single act that doubled the size of the United States and laid the foundation for a future superpower.
The most significant short-term effect of the decision made in Marbury v. Madison was the fact that it greatly magnified the court's authority and opinion, though it can be debated that this is also a long-term effect.
Another short-term effect is the fact that the decision was a major slap at the Jeffersonians, who were very thirsty to prevent such a thing and to remove any traces of a Federalist influence in court, despite the fact that Jefferson flip-flopped on his political views several times later on. As a result of that, the Jeffersonians attempted to impeach Samuel Chase, a Federalist judge serving on the Supreme Court, because he spoke out against the Republicans. Though he was found not guilty of the charges brought against him (high crimes and misdemeanors), he became deeply unpopular and scorned by the public. The short-term effects of the decision in Madison v. Marbury were certainly important, the long-term effects certainly outweigh them.
Another significant effect of the decision in the Marbury v. Madison case...