Final answer:
The Oldowan pebble tools are the world's oldest recognized stone tools, dating from approximately 2.5 to 1.5 MYA and signify a significant advancement in human technology.
Step-by-step explanation:
The Oldowan pebble tools represent the world's oldest formally recognized stone tools.
Archeologists have discovered that these tools date back roughly 2.5 to 1.5 million years ago (MYA), marking an important period in early human technology. The Oldowan tool industry is characterized by simple but effective tools made by early hominins like Homo habilis and Paranthropus boisei in Africa. These tools served a wide range of purposes, including cutting, scraping, and chopping, greatly aiding in tasks such as hunting and butchering meat. Despite their crude appearance, these stone tools signify a significant advancement in human ingenuity and skill, laying the groundwork for future developments in toolmaking.