Question: Age 21 became the uniform legal drinking age across the us in?
Disambiguated questions and answers: question: When did the law pass where 21 would become the uniform legal drinking age across the US?
Age 21 became the legal drinking age across the US, requiring states to officially have their drinking ages raised to 21 by when?
answer: July 17, 1984
October 1986
Natural Questions answer: July 17 , 1984 (from the Wikipedia article "National Minimum Drinking Age Act")