Sabine RiverThe Sabine River begins in Northeast Texas and flows into the Gulf of Mexico. The largest city on the river is the city of Longview, Texas. It also serves as a state line boundary between Texas and Louisiana.
During the American Civil War on September 8, 1863, the Second Battle of Sabine Pass was fought at the mouth of the Sabine. In the battle, a small Confederate force thwarted a Union invasion of Texas.