What geographic features isolated ancient china from other civilizations

The geographic features that isolated China from other civilizations were the Himalayas, the Gobi desert, and the Seas that surrounded it which were the Yellow sea , the Pacific Ocean , and the Mariana trench.
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You don’t have to names or other options up here so idk dude

Economic success prussia had a very strong economy, partly due to the success of the zollverein. stronger prussian army king wilhelm wanted to build a bigger, stronger army but was blocked by the prussian landtag (parliament).-credits to google for putting answer -credits to slideshare for making answer-credits to me for putting answer on brain.ly