Writing
The invention of the first writing systems is roughly contemporary with the beginning of the Bronze Age of the late 4th millennium BC. The Sumerian archaic cuneiform script and the Egyptian hieroglyphs are generally considered the earliest writing systems, both emerging out of their ancestral proto-literate symbol systems from 3400 to 3200 BC with earliest coherent texts from about 2600 BC. It is generally agreed that Sumerian writing was an independent invention; however, it is debated whether Egyptian writing was developed completely independently of Sumerian, or was a case of cultural diffusion.
Prehistoric art
Engraved shells created by homo erectus dating as far back as 500,000 years ago have been found, although experts disagree on whether these engravings can be properly classified as ‘art’. From the Upper Palaeolithic through to the Mesolithic, cave paintings and portable art such as figurines and beads predominated, with decorative figured workings also seen on some utilitarian objects. In the Neolithic evidence of early pottery appeared, as did sculpture and the construction of megaliths. Early rock art also first appeared during this period. The advent of metalworking in the Bronze Age brought additional media available for use in making art, an increase in stylistic diversity, and the creation of objects that did not have any obvious function other than art. It also saw the development in some areas of artisans, a class of people specializing in the production of art, as well as early writing systems. By the Iron Age, civilizations with writing had arisen from Ancient Egypt to Ancient China.