The Roulston-Rogers site in Seminole County is a archaeological site in Sasakwa, Oklahoma. This is a Plains Village culture site. The Plains Village period took place approximately from 900-1780/1850 CE in the Great Plains, in the area that spans from North Dakota to Texas.
Using the word "sinew" suggests that there are many components of what make peace work, and it implies that we as people must know how to be peaceful by cooperating with each other.