??? The US has NEVER formally removed any coins or bills from circulation except those backed by gold. You should be able to find oceans of pre-2001 coins in circulation, and a significant number of bills as well.
you still have abillion dollars
You still owe us 20 dollars; please remit this sum by return.
No.
$100 is the highest denomination of US dollars currently in use
yes they do
Europeans do not use dollars, some use Euros, or pound sterling
US dollars
$157400 (as of October 12th 2001)
no
$3.5 trillion dollars
They use US dollars.
What currency do USA use?!?!?!?!?!