<em>Utilitarianism</em> is a philosophical standard by which utility for the greater good is promoted. This means that while the individual's status is degraded, it is acceptable so long as the net benefit or utility gained from the action is sufficiently beneficial for the rest of society/greater good.
A buddha is one who has attained Bodhi; and by Bodhi is meant wisdom, an ideal state of intellectual and ethical perfection which can be achieved by man through purely human means.
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Large quantities of potatoes were imported by Europe as a result of the Columbian Exchange and the introduction of a new variety of seeds helped the growth of potatoes.
The end of black slavery brought a new form of knowledge about the term slavery. Slavery in general came to be seen as the great exploitation of people for something futile and stupid, which in fact is true, slavery has taken on a new meaning and this has enabled society to change.