The picture depicts a large mass of people, leading one to make the conclusion that the cities were over-populated. The answer is b
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
Answer:
An invasion, via blitzkrieg tactics.
Explanation:
I believe that Nicola Sacco was convicted of murder in World War I.
Hope this helps!
~Mistermistyeyed.
The Bill is given a title and a number after the first reading.