Yes. The U.S. has never withdrawn or demonetized any bills except for gold certificates.
However most $1000 bills are worth more than face value to a collector so you'd be better off checking with a dealer to see how much you could sell it for, as opposed to spending it.
No.
Grover Cleveland, the 22nd and 24th President of the United States, appeared on the $1000 bill (a denomination which, while still legal tender, no longer circulates in the United States).
No. The British Penny is only Legal Tender in amounts up to 20 Pence.
That would depend on what currency (country) the 1000 bill was for.
There is such a thing as a U.S. $1,000 bill, but none have been printed since the 1940s, and they were officially withdrawn from circulation in the late 1960s. They are still legal tender at face value, but are generally worth more to collectors.
All US government notes issued since 1861 are still legal tender. The $1000 bill, with president Grover Cleveland, was circulated between 1929 and 1969 and would today be worth a minimum of $1000. There are still an estimated 165,372 $1000 bills in circulation, but their rarity makes them very valuable. A 'very fine' condition note is worth about $3,500.
Zero. The Sucre banknotes are no longer legal tender in Ecuador. As of 2017, Ecuador uses the U.S. dollar.
No
The Italian lira is no longer legal tender. It has been replaced by the Euro.
No.
The Italian lira is no longer legal tender. It has been replaced by the Euro.
There used to be, yes. However, they were last printed in 1945 and distribution was ended in 1969. The bills remained legal tender but banks were required to keep any that they received and return them to the US Treasury, which effectively ended circulation.