This bonus allows additional trade routes to be created
- Gifted Traders (+1%) cost: 3 points
- Superior Traders (+2%) cost: 6 points
- Master Traders (+3%) cost: 9 points
- +1% means +1 trade route in this case
- You still must research the technology 'Trade' in order to use any trade routes
- Limited usefulness in DA and DL. See Trade Bonus for explanation.
- There's also a hard-coded limit of 12 trade routes one civ can have. If you chose Neutral Alignment (with tech for 12 trade routes) and also pick those bonuses, you'll not be able to utilize them.