Answer:
foot-in-the-door phenomenon.
Explanation:
In psychology, foot in the door phenomenon refers to a situation that make people becomes more likely to agree to fulfill bigger request after previously fulfilling smaller request.
This happen because after fulfilling a small request, most people developed a positive feeling from the experience of helping others. It make us feel good and somehow valuable. When we're asked to fulfill bigger request under this emotional condition, we become more likely to agree with it.
This is what happened in the example above. First, the friends ask to smash neighbor's decoration (smaller request). After that, he became more likely to agree to throw eggs at police cars (bigger request)
The Theory of the Continental drift tells us that all of the continents were one big continent called the Pangaea. Stones like the Petoskey stone help prove this theory. There are stones which have been found in Africa and then have been discovered in South America.
