When did Oklahoma officially become a state?

Oklahoma officially became a state on November 16, 1907. This date is significant because it marks the moment when Oklahoma was admitted to the Union as the 46th state. The transition from a territory to statehood involved a series of legislative actions and constitutional developments, reflecting the social and political changes occurring in that period.

While the other dates provided are important in Oklahoma's history—such as the 1906 date relating to the land runs and earlier movements toward statehood—they do not represent the official statehood moment. This clarity in understanding the timeline and significance of November 16, 1907, solidifies its importance in both Oklahoma and U.S. history.