Im not sure if this is completely but i believe that it is C. sliding past each other, because when they press against each other they build tension, then when the slip past each other it creates tremendous force thus having earthquakes
France might be classified as a core kind of nation.
The answer to this question is Bias
When researchers are being biased in their analysis, all of their analysis become really unreliable because it does not fully reflect to the truth.
To make the result of the researchers fully reliable, researchers need to base their analysis solely to the data at hand
In spite of the wealth of the country Colombia and its natural resources such as coffee, emeralds and coal, Colombia has a turbulent history which caused a turmoil. And the answer to the given question is letter C. Powerful drug cartels and guerilla groups.