>>12 Socialistic stagnation, and lack of advancement & progress due to ridiculous levels of taxation/public sector, coupled with a burgeoning population, and overspending on the military, just to name a few. In the arms race, the Soviets were trying to outdo us militarilly, and we were trying to outdo them. Reagan became president, and likely knew this, and stepped up our military spending. The soviets then tried to keep up with us, and it all escalated and probly fucked up their economy more than it already was..
There's probly more to it than this, and I don't feel like getting into specifics. My two cents for ya.