What was the currency before crypto?

Before the advent of cryptocurrency, what was the dominant form of money used for transactions and exchange? Did people rely on physical currencies like gold, silver, or paper notes issued by governments and banks? How did these traditional currencies function in the global economy, and what challenges did they pose in terms of security, accessibility, and efficiency? As we explore the rise of digital currencies, it's intriguing to reflect on the historical context and evolution of money itself.