Before the invention of the postage stamp, it was difficult to send a letter to another country. The sender paid for the letter (travel) in his or her own country. Then the person in the other country paid for that part of the trip. a letter crossed several countries, the problem was (bad).
Rowland Hill, a British teacher, had the idea of a postage stamp with glue on the back. The British post office made the first stamps 1840.They were the Penny Black and the Twopence Blue. A person (buy) a stamp and stuck it on a letter. The post office delivered letter. When people received letters, they didn't have to pay anything. The letters were prepaid.
Postage stamps became popular in Great Britain (immediate).Other countries started making (they) own postage stamps very quickly. Today, post offices in every country sell beautiful stamps. (collect) stamps is one of the most popular (hobby) in the world, and every stamp collector knows about the Penny Black and the Twopence Blue.
