There is absolutely a chance for a peaceful approach.
But it requires quite abit of luck with:
1. Monty founding Buddhism/Hinduism.
2. You getting spread fast enough (Difficult with lack of connecting rivers and coastal cities).
3. You succeeding in producing 2 surplus settlers fast enough, and managing to escort them through the jungle and gaining +3 liberation bonus.
Then you will get to friendly, and be safe long term.
But what next...?
But it requires quite abit of luck with:
Spoiler :
1. Monty founding Buddhism/Hinduism.
2. You getting spread fast enough (Difficult with lack of connecting rivers and coastal cities).
3. You succeeding in producing 2 surplus settlers fast enough, and managing to escort them through the jungle and gaining +3 liberation bonus.
Then you will get to friendly, and be safe long term.
But what next...?