Has old europe ever repaid the debts it owes to the USA from World Wars 1 and 2?
Don't think so.
Yup.
England paid off all loans soon after 2000.
Dunno about the rest of Europe
According to its federal debt authority, Germany has paid off its debts of the time before 1944 by the year 1983. The debts of the early post-war years will be paid off by 2010.