What administrative change in the 19th century significantly contributed to the waning dominance of the traditional wax seal?

Answer

The introduction of the paper envelope and the rise of national postal services.

The introduction of the paper envelope and the establishment of national postal services favored speed and uniformity over the time-consuming process of heating and impressing wax.

What administrative change in the 19th century significantly contributed to the waning dominance of the traditional wax seal?

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Wax Seals: How-to & History - YouTube

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