Write an article (in Greek) of 500-800 words that describes the following:
(1) How and when the British pound was created (e.g., what was used as currency before it was created, if anything)
(2) How the use of the British pound has changed over time (e.g., in terms of territories or how commonly the currency is used worldwide)
(3) Any other interesting facts about the British pound (e.g., periods of high inflation, other noteworthy historical events)
Please cite any sources you use, e.g., Wikipedia or other sources. Needless to say, the content should be original (i.e., not plagiarized).