What is the first instance of classifying in human history?

Ah, classifying things is as natural as the happy little trees in a painting. The first instance of classifying in human history might have been when early humans grouped things like plants and animals based on their characteristics. It helped them understand the world around them and make sense of their surroundings. Just like how we organize our painting supplies to create a beautiful masterpiece, classifying things helped our ancestors make sense of the world around them.