Of course this question has an particularly interesting assumption embedded in it.
Clearly many other countries, such as the UK and much of the western world have a bit of a throw-away mentality too but do not have a "US frontier" heritage.
If the assumption in the question is correct it would imply that the rest of western culture caught this particular disease from the US.
Personally I'd suggest that there are other more dominant origins.
Primarily the realisation by marketing types that in order to sell more products you can appeal to novelty.
You have to buy the latest model, this years car, the latest fashions etc. etc. and to support this you churn out updated models every year, every quarter or even quicker.
Support this with advertising suggesting that you're somehow not as good as the man/woman next door if you don't have the latest model and you quickly end up with a society where second hand is second class.
And what happens to last years model? it's thrown away and that costs manufacturers nothing - or it used to.
The main drivers of disposable goods are not American culture but rather capitalistic drive for greater product turnover.
If this sounds like an environmental disaster - well it doesn't have to be. A recent government study in the UK comparing the environmental benefits of disposal veruses cloth nappies/diapers surprising concluded there was little between them. The environmental costs of washing, disinfecting and delivering the traditional ones soon mount up.
The problem comes when people are convinced that they need a new whatever each year when really they don't.
Oh BTW you get better responses on here if you say "I've got this question I'm having trouble with" rather than just typing in the question- it kind of looks a bit lazy if you know what I mean