Question

Which word or phrase is a suitable replacement for Hence at the beginning of the second sentence?

The court ruled against the sale of fireworks in local supermarkets. Hence,
in-store stocks of fireworks have been recalled and will be sold only at authorized fireworks vendors.

However

Essentially

In other words

To this end

Answer 1

The word or phrase that is a suitable replacement for hence at the beginning of the second sentence is to this end.
To this end means - in order to achieve this goal.