(here's a fun question) In 1802, invented the first electric ___. He experimented with electricity and invented an electric battery. When he connected wires to his battery and a piece of carbon, the carbon glowed, producing . His invention was known as the Electric Arc lamp.

Answer is in the photo. I can only upload it to a file hosting service. link below!

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Explanation:

Humphry Davy,The first electric light was made in 1800 by Humphry Davy, an English scientist. He experimented with electricity and invented an electric battery. When he connected wires to his battery and a piece of carbon, the carbon glowed, producing light.

Fraction of stamp from Mexico = 3/8 of total stamps. So total number of stamps are 48.