Answer :
Final answer:
Oldowan, Acheulean, and Blade tools differ in both the time periods they were used and their increasing complexity and sophistication over these periods. Essentially, as hominins evolved, so did their tool-making abilities.
Explanation:
The key distinctions between Oldowan, Acheulean, and Blade tools primarily lie in: A) The time period in which they were used, B) The increasing complexity and sophistication of the tools over these periods.
Oldowan tools are the oldest known, dating around 2.5 to 1.5 million years ago, and were relatively basic. Acheulean tools, coming into prominence around 1.7 million years ago, showed an evolution in craftsmanship, as these tools were modified on both sides resulting in a symmetrical design. Finally, Blade tools, prominent during the Upper Paleolithic period, were more sophisticated yet, and crafted for specific purposes such as cutting or scraping.
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