Answer:
A. Kansas (1)
Step-by-step explanation:
After the Civil War, the highest prices for longhorns were typically found in Kansas. During this time, Kansas served as a major destination for cattle drives from Texas, where longhorns were raised. The demand for beef in the growing cities of the East, such as New York, drove up the prices of longhorns in Kansas, as it was a strategic location for transporting cattle to the eastern markets via railroads. Therefore, among the options provided, Kansas was the primary location where longhorns were selling for the highest price after the Civil War.