* The Mississippi River: The Mississippi River forms a significant portion of Tennessee's western border. This massive river is naturally winding and meandering, creating a jagged, irregular line.
* Early Land Claims: When Tennessee was being settled and its boundaries were established, the Mississippi River was a major transportation route. The borders were often drawn along natural features like rivers, which led to the inclusion of some of these meandering stretches.
* Statehood and Boundary Disputes: In the early 19th century, there were disagreements about the precise location of the state's western border. This led to further adjustments and negotiations, resulting in the current shape.
* The Tennessee-Kentucky Border: The western border of Tennessee also includes a portion that runs along the Ohio River, which is another naturally winding body of water, adding to the jagged appearance.
It's important to note: While the Mississippi River is the most prominent feature, the jagged border is not solely due to the river's meandering course. Historical land claims, boundary disputes, and other geographic factors all played a role in shaping Tennessee's western border.