What is the first instance of classification in human history?

The first instance of classification in human history is often attributed to the ancient Greeks, particularly the work of Aristotle in the 4th century BCE. Aristotle systematically categorized living organisms into groups based on shared characteristics, laying the groundwork for biological classification. His system included the differentiation between plants and animals, as well as further subdivisions within these categories. This early approach to classification influenced subsequent scientific thought and taxonomy.