The oldest form of historical record is oral tradition. Long before the invention of writing systems, human societies preserved and transmitted their knowledge, histories, customs, laws, and cultural values through spoken word passed from one generation to the next. This included stories, songs, proverbs, genealogies, praise poetry, and ritual recitations maintained by designated custodians of community memory - such as griots in West Africa, bards in Celtic societies, and elders in many indigenous cultures worldwide.
Oral tradition predates all other forms of historical record by thousands of years. Writing systems only emerged around 3,500-3,000 BC in Mesopotamia and Egypt, meaning that for the vast majority of human history, oral tradition was the sole means of preserving the past. Archaeology, while it studies material remains from very ancient periods, is a modern academic discipline developed in the 18th and 19th centuries - it is a method of studying the past, not a form of record-keeping used by ancient peoples themselves. Photography was invented in the 19th century and is by far the most recent of the options listed.
In many parts of Africa and other regions, oral tradition remains an important historical source, especially for periods and communities where written records are scarce or non-existent.
