Inflation is almost 100% caused by "too much money" chasing "too few goods". "Too much money" is a condition almost always caused by the creation of too much "fiat currency" (ie a currency that is backed by nothing but the good faith and credit of the issuing government) As we all should know, in the US, on 6/5/1933 FDR took the US off gold-backed currency and started the fiat currency situation we still find ourselv…
US Household debt to GDP steadily went down over that period.