I would think it would be B. That is the only one to that would directly include something with movement. Sorry if you get it wrong.
To be precise , the continent such as Europe, does not exist. Continent is called Eurasia and Eurasia - the largest continent in the world. Answer: B.
Answer:
With no gold rush, there is no gigantic rush to populate that region. If there aren't enough people then there aren't enough businesses and the economic network is tiny.
Explanation: