Ancient DNA shows Europeans descend mainly from three populations: Ice Age hunter-gatherers, often dark-skinned and sometimes blue-eyed; farmers who arrived from Anatolia around 8,000 years ago; and herders from the steppes who came some 5,000 years ago. No people is 'pure': every population is a blend.
Around 2300 BCE, Enheduanna, daughter of King Sargon of Akkad, became high priestess of the Moon god at Ur. She composed hymns to the goddess Inanna and put her name to them. She is the oldest person identified as the author of a literary work, about 1,500 years before Homer.
Squeeze Earth's 4.5 billion years into a single 24-hour day. Homo sapiens shows up around 11:59:54 p.m., roughly six seconds before midnight. All of written history, from Sumerian tablets to today, fits into the final tenth of a second. A cosmic blink.