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 north and south dakota became states?" whose answer is 2, 1889.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when did north and south dakota became states
Useful Output:

Doc 1: After years of serving as territories, North Dakota, South Dakota, Montana, and Washington all join the Union as new states in November 1889.
Doc 2: Later that year, on November 2, North Dakota and South Dakota were admitted to the Union as the 39th and 40th states. https://kr.usembassy.gov/
Doc 3: Although President Benjamin Harrison signed them both into statehood the same day – Nov. 2, 1889 – which state actually entered the U.S. first?
Doc 4: At 3:40 p.m. on November 2, 1889, Harrison signed North and South Dakota into statehood using an eagle feather. Before doing so, Secretary of
Doc 5: As the southern part of the former Dakota Territory, South Dakota became a state on November 2, 1889, simultaneously with North Dakota. They are the 39th and