What is the legal age at which a child can babysit siblings?
The ages at which children can be left unattended vary by state, so
the answer depends on where the children live. For example, here in
Florida there is no minimum age. All that's required is that the
children's' welfare isn't jeopardized and that they're sufficiently
cared for and in no danger.
In Canada it's 12 years old.