Answer: c. Economically developed; economically developing
Explanation:
Economies that are doing fine in the society are giving a different measurement in requirements and enforcement than economies that are still finding their feet to get a stand. Policies that are used for economies doing well or improving are definitely different from that which is used for those still struggling.
I believe the answer is behavioral perspective
Behavioral perspective focus on how we can make individuals behave a certain way by by conditioning a certain stimulus-response relationships.
To achieve this, most of them would utilize reward or punishment to make the individuals lean toward a certain behavior.<span />
They rose due to nationalism. Germans wanted revenge for WW1 where they thought they were punished too harshly, while Japan deemed that it was a great nation and that it should enter the continent through China. Germans fell because they became too spread out and couldn't fight the war an all fronts, while the Japanese lost it because they enraged the US who nuked them.
I believe the answer is: brain changes that greatly improve dexterity
As we are conditioning ourselves to do something with a certain part of our body, our brain would eventually improve and adjust itself to make us able to do that thing better, even on automatic function. The same thing happen to soccer youths who are continuously trained to use both of their leg to make a maneuver ever since they're little.