The Industrial Age is the fourth Age (after the Fortress Age) in Age of Empires III. It is characterised by the Industrial Revolution which took place during the 18th and 19th centuries. The Industrial Revolution was a massive economic, social and technological change facilitated by the introduction of steam power and the use of automated machinery in manufacturing.
Also the Industrial Age sees the growth and the rise of militaristic and economic developments. So by this age in the game most players are able to produce large armies of military units and are also able to fortify themselves more effectively. Also by this time the civlization is well developed and have been able to go through the other three ages. To advance to the Industrial Age the player must have 2000 Food and 1200 Coin . Prior to researching, the player will have the option to select one out of the two available Politicians, each providing different rewards. The Industrial Age is followed by the Imperial Age.