What are the possible drawbacks of using Phoenician measurement and writing?

Phoenicia from Ancient Greek:

was an ancient Semitic-speaking thalassocratic civilization that originated in the Levant region of the eastern Mediterranean, primarily modern Lebanon.[5][6] It was concentrated along the coast of Lebanon and included some coastal areas of modern Syria and Galilee (northern Palestine), reaching as far north as Arwad and as far south as Acre and possibly Gaza.[7][8][9] At its height between 1100 and 200 BC, Phoenician civilization spread across the Mediterranean, from the Levant to the Iberian Peninsula.

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answer; i believe that the correct answer to the above question is; (tariff)

they had freedom from the government and from the affairs