The token currency, 'tanka', introduced by Mohammad-bin-Tughlaq was made of bronze.
5) Who introduced token currency system?
Answer is:
Muhammad-Bin-Tughluq
Explanation:
![Who introduced token currency system?](https://answer-my-question.com/uploads/images/objective-questions/gk-set-1-ancient-indian-history-dynasties-1/gk-set-1-ancient-indian-history-dynasties-1-id-5-e.jpg)