This map illustrates the sources of obsidian and the routes taken to trade the v

This map illustrates the sources of obsidian and the routes taken to trade the valuable commodity in both North and South America.
Why do you think there were more trade routes across North America than South America?
How would you describe the relationship between trade routes and the following:
The populations in the different regions
The livelihoods of the native tribes
The climates
Any other characteristic of the region you deem relevant to support your thinking
Your initial response should address the prompts in the discussion topic. It should be substantial (at least 300 words in length) and contain citations for at least two scholarly sources you utilized in your response.