Which ancient civilization created the earliest known product endorsement, featuring a royal sandal-maker who advertised his royal connection on his shop sign?

In today's world, celebrity endorsements and product partnerships are everywhere, but did you know that the concept dates back thousands of years? Ancient civilizations had their own versions of product marketing and endorsements, often connecting royalty, deities, and respected figures to goods and services. This poll tests your knowledge about one of history's earliest documented product endorsements that archaeologists have uncovered.

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Ancient Egypt, where a sandal-maker's limestone tablet (circa 1390 BCE) proclaimed 'Purveyor of sandals to Pharaoh Amenhotep III'
Mesopotamia, where a clay tablet (circa 2100 BCE) featured a beer brewer claiming his beverage was 'Favored by King Shulgi of Ur'
Ancient Greece, where an Athenian pottery maker's sign (circa 500 BCE) stated 'Official amphora supplier to the Temple of Athena'
Roman Empire, where a mosaic advertisement (circa 79 CE) at a Pompeii shop entrance claimed 'Cobbler to Emperor Vespasian'