Help ASAP !! Research the incandescent light bulb, its construction, who invented it and why it was so popular for so long?

Incandescent Bulbs Light the Way

Long before Thomas Edison patented -- first in 1879 and then a year later in 1880 -- and began commercializing his incandescent light bulb, British inventors were demonstrating that electriclight was possible with the arc lamp.

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so is this a rhetorical question?

provide the full question .