Bonsoir j’aurais besoin d’aide pour cette exercice svp merci d’avance bonne soirée

Réponse :

a. Samuel Morse sent the first telegraph message in 1844.

b. The first chewing-gum was sold by John Curtis in 1848.

c. In 1884, Waterman made the first fountain pen.

d. Judson invented the zipper in 1891.

e. The e-mail was invented in 1972 by Ray Tomlinson.

Explications :