Why was the last battle of the civil war, battle of palmito ranch, fought in texas?

a. all texan troops refused to quit fighting.
b. grant had brought the majority of his troops to texas.
c. lee had refused to surrender and retreated to texas.
d. news of the war's end was slow to reach texas.

Don’t mind the already marked answer but taking it now

"the plan of removing the aboriginal people who yet remain within the settled portions of the united states . . approaches its consummation. . an extensive region . . has been assigned for their permanent residence. it has been divided into districts and allotted among them. many have already removed and others are preparing to go. . " removal of southern indians to indian territory, 1835 this passage is most closely related to a) imperialism. b) the civil war. c) westward expansion. d) the french indian war.

What is one result of the supreme courts decision in the mccullough v maryland case