Less battles were fought in Texas.
The Civil War.
The Dred Scott decision is a shameful decision that rightfully angered abolitionists, deepened divides, and helped lead to the Civil War.
Feudalism allowed large territories to be governed in the absence of a central government. Each lord or vassal raised an army to defend his fief and to serve the king as needed. One drawback to this system was that the nobles were very powerful because they controlled the armies.