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: "why did they raise the drinking age from 18 to 21?" whose answer is to combat drunk driving fatalities.
Each document should contain about 30 words, and these documents should contain useful information.

Query: reasons for raising the drinking age to 21 in the us
Useful Output:

Doc 1: Raising the drinking was meant to help lower that number. Also, the drinking age is officially a state issue, but was passed with federal
Doc 2: Some people believe raising the legal drinking age to 25 is imperative because of considerations like emotional and physical maturity.
Doc 3: From the early days of the nation to the present, the drinking age has evolved in response to various social, cultural and safety concerns.
Doc 4: The legal drinking age was determined by each state. 30 states lowered the drinking age from 21 to 18 due to the fact that the war drafted at the age of 18.
Doc 5: In statistical terms, it is clear, a drinking age of 21 saves lives. And, when combined with other changes, the culture around youth drinking