30000 BCE - 12000 BCE. Cave art culture in Europe. c. 20000 BCE. ... 5000 BCE. Hierarchical societies emerge in southeast Europe. c. 5000 BCE. ... 4300 BCE. First megalithic tombs in Europe. 3500 BCE. Farming has spread across Europe. 2800 BCE - 1900 BCE. Bell beaker culture in western Europe. 2300 BCE.