The answer is option number 4. If you do the math, the sides are simply scaled by 3.
The Sacramento River and the San Joaquin River
Feudal Monarchies because the idea of a primary ruler appealed to the Feudal people
Answer:
B) A teenager in India attends a rap concert
Explanation:
This is cultural diffusion because rap is from the South Bronx in NYC, and it culturaly diffused all the way to India. The rest of the options are not diffusion, but just regular cultural things.