What did Rowland Hill invent?


Rowland Hill was a Victorian reformer who invented the prepaid postage stamp. He became known as Sir Rowland Hill after being knighted for inventing the first adhesive stamp. He is also credited for creating the first unvarying postage toll based on mass rather than size.
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Tubes and Spheres. The Galileo Thermometer is made up of one large sealed cylinder filled with liquid. The liquid inside the cylinder is usually water. Floating in the water are a
HE INVENTED LOts of thing one of them is PRIME numbers.
Terraced walls to help farming: step like ledges cut into a mountainside where they would grow crops. The Mayan calendar They are know for the first created fully know language, sophisticated
he didnt invent anything.
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