￼It all started with candles. The tradition of an illuminated holiday tree emerged around the 18th century, when wax candles were used to festoon the branches of fresh evergreens. Candles.
The notion is somewhat terrifying today. But even those incandescent bulbs of childhood had their safety and practical drawbacks. The large glass bulbs would shatter; the colored paint would chip and fade. And the occasional ornament would melt or worse if hung too close to a hot colored bulb.
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