Interestingly, the letters to Canaan are written in a mixed Canaano-Akkadian language[1], not in a Canaanite/Hebrew. It is a mixed language with predominantly Akkadian vocabulary and Canaanite grammatical features. It used the cuneiform writing system of the Akkadian language. To the north in Ebla city-state there was another East Semitic language - Eblaite [2].
My speculation would be that Canaan's elite was either Akkadian, or at least they were educated/influenced from there. This is also aligned with the Biblical stories that mythical Abraham come to Canaan from Mesopotamia/Sumer.
My speculation would be that Canaan's elite was either Akkadian, or at least they were educated/influenced from there. This is also aligned with the Biblical stories that mythical Abraham come to Canaan from Mesopotamia/Sumer.
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[1] https://en.wikipedia.org/wiki/Canaano-Akkadian_language
[2] https://en.wikipedia.org/wiki/Eblaite_language