They did all this without a formal written  language, currency, or the help of large draft animals! So, how did this small tribe rise  to become the most powerful in South America?

他们在没有正式的书面语言、货币或大型牲畜帮助的情况下完成了这一切！那么， 这个小部落是如何崛起成为南美洲最强大的部落的呢？

Since the Inca did not have large draft animals to  help them transport substantial amounts of food, it was practical to store the food where  it was grown and distribute it as needed.

由于印加人没有大型牲畜来帮助他们运输大量食物，因此将食物储存在种植的地方并根据需要分发是很实用的。