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 california become part of the union?" whose answer is September 9, 1850.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when did california become a state
Useful Output:

Doc 1: Thanks to a crazy confluence of events, California leapfrogged “territory” status and achieved statehood in September of 1850.
Doc 2:  years ago, on September 9, 1850, California became the 31st state of the United States of America  state was still orange trees and scrub brush
Doc 3: September 9, 1850 California became an official USA State. The history of Los Angeles began in 1781 when 44 settlers from central New Spain (
Doc 4: California officially became the 31st state on September 9, 1850. The American takeover of California replaced the complex racial
Doc 5: American period · Interim governments (1846–1850) · Monterey Constitutional Convention (1849) · Statehood (1850) · California Gold Rush (1848–1855) · Gold Rush