What is Achaemenid coinage?
Could you elaborate on the significance of Achaemenid coinage in the history of currency and finance? How did this system of coinage evolve, and what impact did it have on the economic development of the Persian Empire? What were the key features of Achaemenid coins, and how did they differ from previous forms of currency? Additionally, what implications did the adoption of coinage have on trade and commerce within the Persian Empire and beyond its borders?