Misc: What name is given to scribblings or drawings on public walls?

Questions

the 2nd largest indian tribe in the united states with more than 200,000 tribal members is the?

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?