In the 6th and 5th centuries BCE, give or take a few decades, Confucius was teaching in China, the Buddha was preaching in India and Pythagoras founded his school in southern Italy. Philosopher Karl Jaspers called it the 'Axial Age'. Without ever meeting, they laid down ideas that still guide billions of people.
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.