lines between epicenters .....

1976 had big Earthquakes examples to investigate. 1976 is old, no maps is ready, I will connect the epicenter with lines and look at the specificity of geographies, sea, lakes etc, to understand the forces.  ..........
Also look at the places which no quakes occurred. Also check the months
summer, spring winter quakes.
February 4, 1975 in Haicheng,
guatemala earthquake 1976 februry 4
Ardahan March 25
italian earthquake 1976 may 6
tangshan earthquake 1976 july 28
philippines earthquake 1976 august 16
muradiye-çaldıran november 1976

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Bubonic Plague and earthquakes correlation in history. 
I found that ants, some rats squirrels are sick prior to earthquakes, some epidemic disease occurred in history

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I lıke the video at http://www.youtube.com/watch?v=noWHjU-sxWk