This is hardly an unorthodox strategy, but I've found that selling guns at a cheap rate to a rival colony's native neighbors quickly boosts the natives' relations with you to the point that they will go to war with that colony on your behalf. The native warriors won't take the rival's capitol city, and you will only get a -2 penalty in relations, so you will still be able to trade with them. But their ability to develop and get Founding Fathers will be greatly diminished as they throw their resources into defense.
Is this preferable to conquering rival territory yourself? In the early game I don't want to waste my units on war (too busy scouting, creating missions, training, working tiles, etc.) and also like retaining a trading partner for the revolution. But there are also advantages to conquering your rivals instead of keeping them around. You get their cities/inhabitants, and completely eliminate a rival instead of stunting them. Which is preferable?
Is this preferable to conquering rival territory yourself? In the early game I don't want to waste my units on war (too busy scouting, creating missions, training, working tiles, etc.) and also like retaining a trading partner for the revolution. But there are also advantages to conquering your rivals instead of keeping them around. You get their cities/inhabitants, and completely eliminate a rival instead of stunting them. Which is preferable?
