There are several civilizations which give you an intrinsic income bonus. These bonuses vary encompass abilities that boost peaceful or warlike civilizations, building near woods or deserts, and facilitating trade routes. These bonuses can give you a tremendous advantage over your competitors, but only if you know how to use them.Arabia - Trade Caravans:
from each Trade Route and Oil Resources provide double quantity.
The Arabs work best in a desert area with lots of oases and oil resources. Their special building, the Bazaar, boosts gold output from those two tiles by 2. One wonder Arabs should attempt to get quickly is Petra, as it creates exceptionally powerful desert cities. Their civilization trait works best with wide empires as you will get larger gold bonuses the more trade routes you have.Carthage - Phoenician Heritage:
All coastal Cities get a free Harbor. Units may cross mountains after the first Great General is earned, taking 50 HP damage if they end a turn on a mountain.
Carthage is one of the most powerful seafaring nations, as their trait allows you to have completely free trade routes - each free Harbor saves 3 gold per turn in maintenance. Because of this, the trait becomes more powerful the more coastal cities you have - Carthage is best suited for wide empires.Germany - Furor Teutonicus:
Upon defeating a Barbarian unit inside an encampment, there is a 50% chance you earn 25
and they join your side. Pay 25% less for land unit maintenance.
Germany is a militaristic nation through and through. With their trait and the Autocracy tree, you can field huge armies. If you’re not playing Germany aggressively, you’re wasting all their potential. You should also try to clear as many barbarian encampments as possible early on as you can gain a large army very quickly, and support them for less.Inca - Great Andean Road:
Units ignore terrain costs when moving into any tile with Hills. No maintenance costs for improvements in Hills; half cost elsewhere.
The Incas work best in maps with lots and lots of hills, as all of your roads are completely free in hills. This allows exceptionally large trade networks, and scales best with wider empires although you still gain substantial benefits with a tall empire.Iroquois - The Great Warpath:
Units move through Forest and Jungle in friendly territory as if it is Road. These tiles can be used to establish Trade Routes
upon researching The Wheel.
If you’re the Iroquois, you want to be as deep in the forest as you can. You essentially get free trade networks as long as your cities are connected by forests, and you get tremendous military mobility. You’ll want to focus your workers on building and improving Trading Posts as they don’t remove forest or jungle, and get religious beliefs that benefit those tiles. If you stack them right, you can get huge bonuses without ever clearing your forests. What kind of empire they are best suited for depends entirely on how much of the map is forested.Ottomans - Barbary Corsairs:
All melee naval units have the Prize Ships promotion, allowing them to capture defeated ships. Pay only one-third the usual cost for naval unit maintenance.
The Ottomans are designed for water maps. Their trait is straightforward - you can field a larger navy for less (which is good, because if you’re doing a lot of naval combat, you’ll be getting more ships than you know what to do with from the Prize Ships promotion).Persia - Achaemenid Legacy:
last 50% longer. During a Golden Age, units receive +1
and a +10%
If you’re Persia, you want to build Chichen Itza as soon as you possibly can, even if that means you rush by other technologies on your way. Golden Ages should be the entire Persian strategy, and since you receive tremendous boosts in gold, if you focus on Golden Ages you should be raking in the income. As long as you keep your empire happy, it doesn’t really matter whether or not you have a wide or tall Persian empire.Songhai - River Warlord:
Receive triple Gold from Barbarian encampments and pillaging Cities. Land units gain the War Canoe and Amphibious promotions, strengthening them while embarked.
Playing Songhai allows you to gain a huge gold advantage right out of the gate. You should focus on pillaging barbarian encampments early on to build up your treasury so you can expand more quickly. Like Germany, Songhai is a purely offensive nation. Be prepared for war to make full use of your abilities.Spain - Seven Cities of Gold:
Gold bonus for discovering a Natural Wonder (bonus enhanced if first to discover it). Culture, happiness, and tile yields from Natural Wonders doubled.
Spain’s traits are built for empires that explore and expand quickly. You’ll want to build multiple scouts to start exploring, and you’ll want a wide empire in order to have as many Natural Wonders inside your borders as you can.