b. barter economy
Simple trading, no money involved. (Also the definition of barter)
I believe the answer is: <span>cultural change speeding up
The increase in communication technology make it a lot easier for individuals to study about foreign culture. Over time, these individuals would adopt the valur or tradition from foreign culture and integrate it with their culture, which cause the </span><span>cultural changes to speed up.</span>
B. On average, women live longer than men.
