In 2006, Brazil officially achieved "energy independence" -- that is, its oil exports came into line with imports and cancelled them out. No longer beholden to foreign suppliers for its energy needs, the nation theoretically has no stake in costly Middle East military adventures to secure access to oil reserves. Grain alcohol? Haven't touched the stuff since college. Photo: Whitehouse.gov Sounds like a certain colossus to the north has a lot to learn from Brazil's recent energy strategy, huh? Indeed, much of Brazil's energy independence stems from a successful ethanol program, which has replaced about 40 percent of gasoline use …