During the industrial revolution, more people were needed in factories than in farms. This migration from farms to cities was known as the business revolution.
Renaissance
The age of enlightenment began in the 1650's, so it would need to be a continuation of an era that ended around the 1650's. Since the Renaissance lasted from 1350 - 1650, that makes it the most likely answer.
Explanation:
when Aristotle speaks of the soul 'in the heart' he has in mind the heart as primary and proximate material organ of the soul, the controlling organ originally informed and activated by the soul, upon which all the other organs depend for their formation and activation by the soul. They too live, are informed and activated by the soul, but in a way that is secondary and more remote. To speak of the soul as existing 'in the heart' is not to deny it's presence in the other organs, but to indicate the primary and proximate subject it informs and activates.
