Describe three pricipal ways civilization spreads from one region to another

Hiya there!

Explanation:

The three principal ways civilization spreads from one region to another is through trade, travel and warfare. When people travel, they bring with them goods from their region to another and this would be the start of contributing and sharing, and trading their ways and ideas of growing crops and raising other goods.

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Credit sourced from " ParidhiAgrawal"

they united the colonies in their fight against the british.