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
The bermuda triangle is something that sucks in everything around it. it's not a conspiracy theory, fake snow is.
London and Paris are major. rome? Athens?
Answer:
C.
Explanation:
It was known as the Sand Creek Massacre
