With respect to Arkansas Parisan Rangers and the act. It looks like the guerrilla warfare in Arkansas devastated it in a way that makes Missouri seem rather mild. One reason I'm coming to that conclusion is comparing census figures of each state for 1850, 1860, 1870, and 1880. As a frontier state Arkansas should have undergone incredible growth (as Missouri, Kansas, Texas, Nebraska, etc. did.) Instead it was essentially stagnant from 1860 to 1870, but grew phenomenally again in the period from 1870 to 1880. While many more established southern states "failed to thrive" in the 1860 to 1870 period, the Arkansas effect is most pronounced considering its location and later trends.
Arkansas population was: 210,000 in 1850; 435,00 in 1860; 484,000 in 1870; and 802,00 in 1880. Missouri was 682,000; 1,182,000; 1,721,000; and 2,168,000 respectively.