GMAT Sentence Correction (SC) | Re: Building on civilizations that preceded them in coastal

Building on civilizations that preceded them in coastal Peru, the Mochica developed their own elaborat society, based on cultivating such crops like corn and beans, the harvesting of fish and shellfish, and exploiting other wild and domesticresources.

Meaning : The sentence shows how Mochica Developed their own society. How? 1) Building on civilizations. 2) Based on Couple of other things such as cultivation,
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