You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "when did oklahoma become part of the united states?" whose answer is November 16, 1907.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when did oklahoma become a state
Useful Output:

Doc 1: Referred to as "the land of fertility and progress," Oklahoma enters into statehood November 16, 1907, becoming the country's 46th state.
Doc 2: Oklahoma is a Choctaw Indian word that means "red people." In 1803, Oklahoma was added to the United States as part of the Louisiana Purchase.
Doc 3: Oklahoma was the 46th state to enter the Union on November 16, 1907. Prior to statehood, however, Oklahoma was on the verge of becoming two separate states.
Doc 4: Then in 1907 the Indian Territory and Oklahoma Territory were combined again to become the state of Oklahoma. Today members of over 30 tribes
Doc 5: Oklahoma did not become a State until 1907, over 40 years after the end of the Civil War, so there was no state of Oklahoma which could join the