What is a real example of cryptography?
I'm looking for a concrete and practical example of cryptography. I want to understand how it's applied in the real world, maybe something related to daily life or common technological usage.
What is a real example of free trade?
Could you please provide a tangible illustration of how free trade operates in practice? I'm seeking a real-world scenario that showcases the benefits and workings of free trade agreements or policies. It would be particularly insightful if you could discuss a specific example that involves the exchange of goods or services between two or more countries, highlighting the removal of tariffs, quotas, or other trade barriers that facilitate seamless commerce.