A common question is when were stamps first invented? Why? When were they first used..
Adhesive postage stamps were first used in 1840 in Great Britain. The idea is usually credted to Sir Rowland Hill.
However, the idea of transmitted messages can be traced back at least to Babylonian times (clay tablets etc), and seals and handstamps of various kinds came into use gradually from the Middle Ages onwards. Thus, impressed Revenue stamps and town marks were in use in England in the 17th century.
The adhesive element is thus quite a recent arrival, but the concept has retained the original name of “stamps” from the days of physically stamping the items.
Booklets containing postage stamps were invented towards the end of the 19th century.