The differences in how the war affected each nation, with the US having less destruction and casualties compared to the Soviet Union is your best answer.
Another reason is the fact that they used two seperate types of government, and each tries to impose it's own kind on other countries in an effort to be able to be the "leader of the world".
hope this helps
This is true - Italy has a aging population which is expected to life long - as is the case with most post-industrial societies, while Niger on the other hand expects its people to live not as long and at the same time has a younger population.
Answer:
It is sometimes easier to understand a situation if it is shown to you in a very simple way. The cartton makes you focus on a speific aspect, and you don't get disctracted by other things. Or it's just more entertaining.
~Good day!