Where did the idea of secession start a?

The idea of secession has roots in various historical contexts, but it became prominently discussed in the United States during the early 19th century. The concept was notably articulated in the context of states' rights, particularly in the South, where grievances against federal policies, such as tariffs and abolitionist movements, fueled the desire for independence. The most significant instance of secession occurred when Southern states left the Union leading up to and during the Civil War, culminating in the formation of the Confederate States of America.