The 18th century also brought enormous social changes to France; an enormous growth in population; and, even more important, the growth of the wealthy class, thanks to new technologies (the steam engine, metallurgy), and trade with France's colonies in the New World and India. French society was hierarchal with the Clergy (First Estate) and Nobility (Second Estate) at the top and The Third Estate who included everyone else. Members of the Third Estate, especially the more wealthy and influential, began to challenge the cultural and social monopoly of the aristocracy; French cities began to have their own theaters, coffee houses and salons, independent of the aristocracy. The Rise of the Third Estate was influential in the overthrow of the monarchy in the French Revolution in 1789.