Answer:
By notching a stick, knotting a string, weaving a pattern, or carving or painting images in rock
Step-by-step explanation:
By 20,000 BC, primitive cultures had developed methods of storing information mechanically. By notching a stick, knotting a string, weaving a pattern, or carving or painting images in rock, information could be stored by one person for transmission to others or recall at some later time.