Which of the following is not necessary to categorize an area as a civilization? writing system surplus of food division of labor having cities built

not sure might be he acquired the entire oregon territory from great britain

the correct answer is a: slaves from other colonies ran away to georgia.

we pointed them north: recollections of a cowpuncher by e.c. “teddy blue” abbott tells us of the history of nomad cowboys in north america. as the   frontiers began moving west, trails of cowboys of the 1870s and ’80s drove herds of cattle from texas to the northern ranges and railheads, and then rode back south to do it again. they gradually pushed   native americans out of their lands, until in 1889 the   government transferred white   colonists the indian land.