4. **How do different countries handle the transition from paper banknotes to polymer-based banknotes, and what are the advantages of using polymer?
3. **What are the economic and logistical considerations involved in issuing new banknote designs or denominations by a country's central bank?
2. **How has the design and material composition of banknotes evolved over time, and what are the primary materials used in their production today?
**What are the key security features commonly found in modern banknotes to prevent counterfeiting?
In what ways have digital currencies and electronic payment methods affected the demand and use of physical banknotes in recent years?
How has the introduction of polymer banknotes impacted the durability and lifespan of currency compared to traditional paper notes?
What are the environmental implications of producing and recycling banknotes, and how are central banks addressing these concerns?
How are banknotes designed, and who typically has input or approval in the design process?
What security features are commonly incorporated in modern banknotes to prevent counterfeiting?
What are some of the historical changes in the size, shape, and composition of banknotes across different eras and regions?
