"Boomers and Sooners" refers to the historical events surrounding the land rush in Oklahoma during the late 19th century. The term "Boomers" describes those who advocated for the opening of unassigned lands in Oklahoma, while "Sooners" were individuals who illegally entered the territory before the official start of the land rush on April 22, 1889. The land rush allowed settlers to claim land, leading to the establishment of towns and communities. This event played a significant role in the westward expansion of the United States and is a key part of the history of Oklahoma and the American frontier.