Final answer:
The Olmecs are known for their achievement in rubber balls.
Step-by-step explanation:
The Olmecs are known for their achievement in rubber balls. The Olmecs were an ancient Mesoamerican civilization that existed from around 1400 BCE to 400 BCE in what is now modern-day Mexico. They were the first to discover and utilize the natural resource of rubber and used it to create various objects, including rubber balls.
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