Merdiban was an accounting method used by the Ottoman Empire, Abbasid Caliphate, and Ilkhanate, especially for recording tax payments and liabilities. == Etymology == The word "Merdiban" is derived from merdiven, a word of Persian origin meaning "staircase" or "ladder".
Merdiban was an accounting method used by the Ottoman Empire, Abbasid Caliphate, and Ilkhanate, especially for recording tax payments and liabilities. == Etymology == The word "Merdiban" is derived from merdiven, a word of Persian origin meaning "staircase" or "ladder".
Source: Wikipedia "Merdiban" · CC BY-SA 4.0
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