Original sentence: Although James Chalmers and Lovrenc Košir lay claim to the concept of the postage stamp, postage stamps were first introduced in the United Kingdom of Great Britain and Ireland on May 1, 1840 as part of postal reforms promoted by Rowland Hill.Although the Penny Black could send a letter less than half an ounce anywhere within the UK, the Swiss continued to calculate mail rates on distance.Brazil issued the Bull's Eye stamps on 1 August, 1843.In 1845 some postmasters in the U.Other countries followed with their own stamps: the Canton of Zürich in Switzerland issued the Zurich 4 and 6 rappen on 1 March, 1843.The IBI is human and machine-readable.The first stamp, the Penny Black, put on sale on 1 May, was valid from 6 May, 1840; two days later came the Two pence blue.Today 21 billion items are delivered by post every year in the UK.issued their own stamps, but the first official stamps came in 1847, with 5 and 10 cent stamps depicting Benjamin Franklin and George Washington
Edited sentence: Although James Chalmers and Lovrenc Košir lay claim to the concept of the postage stamp, postage stamps were first introduced in the United Kingdom of Great Britain and Ireland on 1 May 1840, as part of postal reforms promoted by Rowland Hill.Although the Penny Black could send a letter less than half an ounce anywhere within the United Kingdom, the Swiss continued to calculate mail rates on distance.Brazil issued the Bull's Eye stamps on 1 August 1843.In 1845 some postmasters in the United States issued their own stamps, but the first official stamps came in 1847, with 5 and 10 cent stamps depicting Benjamin Franklin and George Washington.Other countries followed with their own stamps: the Canton of Zürich in Switzerland issued the Zurich 4 and 6 rappen on 1 March 1843.The IBI is human- and machine-readable.The first stamp, the penny black, put on sale on 1 May, was valid from 6 May 1840; two days later came the two pence blue.Today 21 billion items are delivered by post every year in the Umoted Kingdom