Answer:
A. the Arkansas River
C. the Neosho River
D. the Verdigris River
Explanation:
Three Forks is an area in what is now Oklahoma, that has been used for thousands of years, especially for trade. The area had a trading hub established after the European settlers came because it had a great location, and it was well connected with other areas for trade. The reason why this area had such a great location and was well connected was that it is at the confluence of three rivers, Arkansas, Neosho (the lower part being known as Grand River), and Verdigris rivers. These rivers enabled the trade deep into the mainland in three different directions, thus connecting people from far away and prompting the economic development of the area.
