Final answer:
The Stone Spheres of Costa Rica likely served as decorative and symbolic monuments conveying political and religious messages within ancient civilizations.
Explanation:
The Stone Spheres of Costa Rica were likely used for multiple purposes, with decorative and symbolic significance being prominent among them. These stone spheres could have served as monuments representing political and religious themes, acting as a medium for expressing beliefs and social structures within ancient civilizations like the Olmec and Maya.
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