Misc: what plant is the "sloe" the fruit of?

Questions

lakota medicine man and chief was considered the last sioux to surrender to the u.s. government?

he was chiricahua apache chief (1829-1909)?

trail used in the cruel relocation of american indians around 1838?

name the river that flows through oklahoma and texas?

oklahoma's only national historic site marks the site of general custer's 1868 attack on the village of this indian chief?