Reference
Exactly what Mayans can train, build and research, by age.
Archer civilization
•Start with +1 Villager, but -50 food
•Resources last +15% longer
•Foot Archers cost -10/20/30% in Feudal/Castle/Imperial Age
Team bonusWalls cost -50%
46 units · 27 buildings · 68 technologies. Each building carries what it trains and researches; upgrades sit under what they upgrade from.