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
D because Africa is known for its abundance in raw materials like the animals, gold, etc.
Russia its pretty simple to figure out
Rasputin was the Tsars right hand homie. But he eventually led to the Tsars demise
