Cash is not going away anytime soon for at least a couple of reasons: Trust (Account Overloards say I have 100 USD in my account when I actually have 1,000), and cash is a very handy debt instrument for the issuer.
(and)
FDR did not take the US off the gold standard, he outlawed private ownership of gold. Nixon took the US off the gold standard in the early 70s.
(and)
FDR did not take the US off the gold standard, he outlawed private ownership of gold. Nixon took the US off the gold standard in the early 70s.