Even so, as the forty-sixth state in the Union, Oklahoma possesses a name that is derived from the Choctaw words okla and humma, meaning "red people," and that name fittingly signifies the uniquely enduring importance of the Native population to the state’s identity. In no other state of the Union is the Native presence more important, more indelible, more enduring—and arguably, more honored in the state’s politics and culture. Yet the achievement of that relatively harmonious state of affairs was bitter and difficult, particularly for the Native population, which had to accept betrayals and abrogation of agreements at every step of the way. Once a state, though, Oklahoma quickly took its place as an important center of the burgeoning petroleum industry, with the city of Tulsa being labeled “The Oil Capital of the World,” and the oil industry serving as a primary driver of the entire state’s booming economy. From the moment that Oklahoma had become part of the United States in 1803, growth had become its byword. It had gone in just a few years from being a raw and forbidding frontier to being a leading force in the growth of the world’s economy, a force now moving into higher and higher gear.