D.) Cultural diffusion
Define<em> diffusion</em><em>:</em>
<em>The process of spread of a feature or trend from one place to another over time.</em>
Mountain chains and river systems generally run North-South throughout the continent thus making for formidable barriers to East-West expansion.
Answer:The Antarctic Treaty
Explanation:
Answer:
C. the total number of people living in an area
Explanation:
