The introduction to the game of racial (national) structures. Example: Khoors race could have built the Asian type, similar to those that were in feudal Japan, Korea and China, including weapons and armor (You can not limit the race Khoors nomads. Merge in this race all the Asian world, not just the Mongolian nomads). In race Slavard construction Scandinavian type (Vikings, Goths, etc.), weapons and armor respectively. Race Gottlung may have built the classic Middle Ages, which were in English, French, etc. (quite suitable construction which is today in the game). This leads some flavor to the game and the opportunity to create a settlement of certain races (nations)....
Examples of buildings and clothing: