Which rivers were significant in LaHarpe's trading activities?

LaHarpe was an important figure in early 19th-century trade, particularly in the region that would become Oklahoma. His activities relied heavily on river systems, which were crucial for transportation and trade routes during that time.

The Red and Arkansas rivers are the correct answers because they were vital waterways that facilitated trade and movement of goods between different regions. The Red River served as a natural border and a significant route for traders moving between Texas and Indian Territory. The Arkansas River was equally important, allowing access to various trading routes that linked the Great Plains with the southern United States. Together, these rivers provided strategic pathways for trade and communication, making them integral to LaHarpe's trading operations.

While other rivers listed in the choices also played roles in trade, they do not pertain specifically to LaHarpe's activities as directly as the Red and Arkansas rivers do.