Nemesis of plunderers
When barbarian units plunder the trade route, they will get a certain amount of marks.When other civilizations kill these units, they will obtain half of gold of the accumulated marks of the unit.The number of marks depends on the current era of the game.
Ancient：100
Classical：100
Medieval：200
Renaissance：200
Industry：250
Modern：300
Atomic：350
Information：400
Future：450
Special Thanks:Asacb(make the cover)
