10. Which court has original jurisdiction over lawsuits involving more than 75,000 square square

In US jurisdiction, the concept of "original jurisdiction" refers to the power of a court to be the first to judge a lawsuit or criminal matter. Original jurisdiction contrasts with appellate jurisdiction, which refers to the authority to review and perhaps overturn matters already decided by lower courts. The question specifically pertains to a lawsuit involving more than 75,000 and the suit is between citizens of different states or citizens of a state and citizens or subjects of a foreign state. This brings into play the idea of "diversity jurisdiction," which is intended to prevent state courts from showing bias towards their own citizens at the expense of out-of-state citizens. It operates under the belief that the Federal Court will apply a neutral assessment of the jurisdictional issues. Thus, the correct answer is the federal district court.