The available options are:
a North Texas along the Red River
b. the northwestern frontier
C. the eastern border with Louisiana
d along the Rio Grande
Answer:
A. North Texas along the Red River
Explanation:
Based on the different options available, it can be concluded that the strongest Texan opposition to the civil war came from "North Texas along the Red River,"
According to historical records and in 1861 when the state of Texas conducted a state referendum on secession. However, the opposition came mostly from "North Texas along the Red River and the German counties in Central Texas.