Among the emotions that often induce people to divulge what otherwise would remain undisclosed, is considered one of the most powerful inducements to becoming an informant.

Fear 
 This is an inclination initiated by apparent peril or danger that happens in specific sorts of life forms like humans and this causes a change in metabolic and organ capacities and at last an adjustment in conduct, for example, escaping from armed men.

It should be at the center of any map going vertically: the prime meridian, as it passes through greenwich,  england, is considered 0 degrees longitude