Final answer:
The Oldowan toolmaking tradition in history evolved out of the pebble tool tradition and lasted until about 1.7 million years ago.
Step-by-step explanation:
The subject of this question is history, specifically the study of the evolution of toolmaking. Oldowan tools were the earliest known stone tools and were used until about 1.7 million years ago. They were created by Homo habilis and served a variety of cutting, scraping, and chopping purposes. This toolmaking tradition evolved into other tool traditions, such as Acheulean and Mousterian tools.