Tag: Terminal dues

Historical-style illustration of a stamped cream envelope on an antique map of Europe, with a dotted red route crossing borders, a brass postal scale, and bundles of letters tied with red cord. Conceptual artwork, not an authentic historical map or postal artifact.

How Did One Stamp Become a Ticket Across Borders?

International postage works because postal systems cooperate across borders and settle delivery costs behind the scenes. The UPU helped build that framework.

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