"Industrialization made more jobs in cities causing people to move there. which made the population rise."
or something like that.
The crisis began with the assassination of Severus.
So your answer is B.
The first choice: The French Navy cut off supplies and a way to escape for the British Army. In addition American and French ground forces well outnumbered British forces.
The mayon religion was based upon a pantheon of nature gods, how ever that's not a selection on your multiple choices. Me inferring, using the information I have would be <span>"B"... the cylcles of seasons and the movements of planets. :)</span>