What, according to smith, were the duties of the sovereign under the system of natural liberty? do you think there are other duties that should be added?

The duty of protecting the society from the violence and invasion of other independent societies

The duty of protecting every member of the society from the injustice or oppression of every other member of it.

The duty of erecting and maintaining certain public works and certain public institutions to erect and maintain

a and c?

i think it is a and c