Algeria, Burkina Faso, Egypt, Mali, Niger, South Africa, Tunisia, France, Italy, Poland, Russia, I could go on foreverXD
The basic cause of the Indian Wars between 1860 and 1890 was the fact that the Americans wanted the land that the Indians had and the resources that might be in and on that land. The earliest wars were brought on to some degree by the Civil War, but the basic cause was still the American desire for more land and resources.
The parallel 36°30′ then forms the rest of the boundary between Missouri and Arkansas. The Missouri Compromise of 1820 established the latitude 36°30′ as the northern limit for slavery to be legal in the territories of the west.
The answer is D. One state sues another state.