There's not a single Death/Water item in Dominions

[Folket]

But when you conquer a new land you bring your own crop with you and force the original population to grow it. You are the chosen by god, why should not your food be the best?

[Kadelake]

Folket said:
But when you conquer a new land you bring your own crop with you and force the original population to grow it. You are the chosen by god, why should not your food be the best?

That's actually quite logical in a religious kind of way. Your people’s native crops (or whatever Giants eat) are adapted to the natural climate. When you conquer a new province you introduce your own crops since you don't want to eat filthy foreign food not blessed by your god. Religious wars don’t tend to be very reasonable or smart.