Were Jains are too extreme in their anti-harm policies

yes

Some Jains have criticized this as being a subtle form of violence. You may think that there is a high degree of self-interest in the doctrine of ahimsa, because in Jainism harm done to other beings is considered harm to oneself since it attracts much karma and thus hinders the soul's journey to liberation

hope this helps

c, to compete

4 copper and gold, the california gold rush is why im pretty sure.