The conversation between human and AI assistant.
What is the oldest civilization on Earth?
Wow, that's very interesting! Were there any other ancient civilizations that were as old or almost as old as the Sumerians?
Yes, there were several other ancient civilizations that were almost as old as the Sumerians, including the Indus Valley Civilization which existed in the Indian subcontinent around 2500 BCE, and the Egyptian civilization which existed along the Nile River around 3100 BCE.