the answer id the last one
Wave model theory did the scientific community in the 17th and 18th centuries decide best explained the properties of light.
The wave model, also known as the wave theory (German: Wellentheorie), is a model of language change used in historical linguistics. It describes how a new feature of a language, or a new combination of features, spreads from its region of origin to a gradually expanding cluster of dialects. Like waves on the water, dialect diffusion propagates from a specific point of contact.
The hypothesis was designed to replace the tree model because it did not appear to be able to explain how various traits, particularly in the Germanic languages, came to exist by deriving from a proto-language. At its most ambitious, it completely replaces the language tree model.
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These 5 geographic features influence the settlement of Korea:
1. Water
2. Landforms
3. Vegetation
4. Soil
5. Climate
I think this is the answer of your question.hope this helps :)
