I'm pretty sure it is D, because they were the most religious groups. sorry if i'm wrong
This one is the cause:
<span>growth of the factory system.
</span>
<span>Growth of the factory system lead to pollution (from the factory chimneys), it made people move from farms to the cities and as a result the number and size of cities increased. </span>
Well Jesus followed Judaism so i’m not 100% sure but I would say spread Judaism? sorry if no
The right answer is: The Americas :)