B because there were more factories and businesses opening in the cities so there were more jobs available.
Distinctive rock sequences on south america terminate at the atlantic ocean but reappear on the continent of Africa.
This is evidence towards the theory of Plate tectonics and the existence of Pangaea.
Answer:
Your answer is doctrine of federal preemption
It is a printing press that is being shown, a form of machinery invented by Johannes Gutenberg around 1440 which was based around already invented screw presses. Here, a company, perhaps book or newspaper related, is busy using the printing press to making multiple copies of the same text again and again.
I believe 1 is "A" and 2 is "B."
