What was true about the one-drop rule

Which of the tribes fought the u.s. army for 10 years to keep their land

Could anything have been done through compromise to stop it, or did it have to happen?

The battle of sabine pass is important because? a) it was a stalemate between union and confederate armies. b) it resulted in the largest confederate casualty in the war. c) it marks the failed attempt of the union army to invade the confederate state of texas. d) it was won by the union soldiers and marked a turning point in the western front of the war.