Which trend are you on about ??????
It was primarily "<span>Rome and Carthage </span>" that fought in the Punic Wars, although it should be noted that there were other, smaller fighting forces involved as well.
He studied the fossils' age and how tall the mountains are. He also studied how old they are. I don't know about Coal Beds but he also used balloons to find out the continents were once a big supercontinent called Pangaea and they apparantly drifted apart
Don larson in 1956 i think
