Final answer:
Don Francisco Salva i Campillo, a Catalan polymath from the late eighteenth century, developed an early version of the electric telegraph, a significant precursor to modern telecommunications.
Step-by-step explanation:
In the late eighteenth century, the Catalan polymath Don Francisco Salva i Campillo developed a means of communication that depended on electrical telegraphy. He is credited with creating an early version of the electric telegraph. Salva's work was an important step toward modern telecommunication and laid the groundwork for the electrical systems that would dominate the nineteenth century and beyond.