**History and Evolution?
5. **What are some historical examples of banknote designs that have faced controversy or criticism, and what were the reasons behind these reactions?
4. **How has the transition from paper to polymer banknotes impacted their production, durability, and environmental footprint?
3. **What materials are typically used in the production of banknotes, and how do these materials affect their durability and lifespan?
2. **How do central banks decide the denominations and design elements (such as portraits, imagery, and color schemes) featured on a banknote?
**What are the key security features commonly used in banknotes to prevent counterfeiting, and how do they work?
What are the economic implications of transitioning from paper-based banknotes to polymer-based banknotes?
How do central banks decide on the imagery and themes depicted on a country's banknotes?
What are the environmental impacts of producing and disposing of banknotes, and how are central banks addressing these concerns?
How has the design and material of banknotes evolved over the years for major currencies?
