Gauls are the most picked tribe for players with generally lower activity and that's for a good reason. In Travian: Kingdoms a hero item lets you dodge a small troop amount with your hero. Meaning, that if you are less active your prime target is a good defense before you start with a strong offense. This is where the Gaul tribe shines. The double Cranny size makes you less interesting to opposing attackers and farmers and helps you to get enough resources to build Settlers. Not necessarily depending on being built or not, the fact that you could have a Trapper often scares enemy players enough to not attack you. Also traps prevent other players from attacking your village with their strong hero alone (as he will just get trapped). However, it has to be stated that the effectiveness of both Cranny and Trapper decreases with the progress of the game world. Still the Gaul is a very good class for a defensive or hybrid playstyle (even if you are very active).
Romans
One important reason for players to pick the Roman tribe is the possibility to extend a resource and an infrastructure building at the same time. Lesser active players might often face resource overflows. The ability to queue three instead of two buildings helps a lot to grow the account faster, to build a large Warehouse and to use the resources effectively. In addition, the high defense bonus of the Roman wall and the fact, that Roman heroes get a higher strength bonus (100 Str instead of 80 Str per spent point) makes them strong defenders in the early to mid-game.
Teutons:
It's not recommend for lesser active players to choose Teutons, as they don´t bring any defensive or economic advantages with them.
More active players
Consider yourself a more active player if you log into your account multiple times a day and/or have Duals or Sitters, which help you achieving this. In this section the focus isn't on activity but on the actual troop and tribe advantages of the different three tribes.
Defensive playstyle
For a defensive playstyle, Gauls are considered to be the best tribe among the three. Of course, also Roman and Teuton accounts can be played defensive with a good success. In the following both tribes are compared to the Gauls.
Gauls vs Romans
Romans are also an excellent choice as defensive tribe because of their good economic growth, however their biggest disadvantages are the slow unit building times and the lack of a defensive cavalry unit. The Praetorian takes 1,7 times longer to be built than the Gaulish Phalanx. That is a huge difference! Also the anti-cavalry unit of the Romans, the Legionnaire, has very average stats for a defensive unit and has to be produced in separate villages as it’s also an infantry unit.
Gauls vs Teutons
In the early, infantry dominated stages of the game the Teuton has very little defense to offer. The Spearfighter is a very fast built, crop efficient and resource efficient unit. Sounds perfect, doesn’t it? The main problem with a Teuton defender comes with the defensive cavalry unit, the Paladin. Despite the facts that it can be a decent raiding unit, the Paladin is just a much weaker and much slower version of the Gaulish Druidrider. The Spearfighter is considered to be a weak anti-infantry defense unit, however if you want to build resource efficient anti-infantry defense it is still better to build Spearfighters instead of Paladins.
Resources spent per infantry defensive point:
Paladin = 7 Spearfighters: 6.85
This means resource wise Spearfighter offer cheaper infantry defense than Paladins, which shows how below average the Paladins defensive stats are. Overall, if you want to build defensive infantry and defensive cavalry units the Gaulish tribe offers a better mix. Still I want to encourage you to try the defensive Teuton, as it is a very unusual and exotic choice and cavalry defense get more important in the middle and late stages of the game.
Offensive playstyle
All three tribes are capable to support an offensive playstyle, however Teutons and Romans seems to have an edge over the Gaulish tribe. If you want to play Romans or Teutons your final choice highly depends on your playstyle and the goals you want to achieve.
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