What was the other territory established in the South called?

Explanation:

The Territory of the United States South of the River Ohio, often called the Southwest Territory, was created by an act of Congress on May 26, 1790. The State of North Carolina had ceded the lands and waterways encompassed by the act to the national government on December 22, 1789, and the cession represented the total area of the territory, although its name suggested the possible inclusion of other lands south of the Ohio not yet in federal hands. Congress specified that the territory would be governed under the provisions of the Ordinance of 1787, the statute establishing the vast Northwest Territory. The lawmakers made one important exception, however. They permitted slavery in the new territory, although they had prohibited the practice in the Northwest Territory.