Final answer:
The Olmecs are known for their achievement in creating rubber balls.
Step-by-step explanation:
The Olmecs are known for their rubber balls as an achievement. The Olmecs were an ancient civilization in Mesoamerica, and they were the first known culture to create rubber. They made rubber by mixing latex from trees with the juice of morning glory vines. They used this rubber to create a variety of objects, including balls for their ballgame, which was an important part of their religious and cultural practices.
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