Answer:
positive externality
Step-by-step explanation:
Positive Externality occurs when the creation or production of a good causes a benefit to a third party. For example:
A farmer who grows apple trees for a living provides the beekeeper some benefit. The beekeeper gets a good source of nectar to help make more honey.
The panorama of flowers planted by Mr. Daisy caused an increase in business activity related to tourists coming to see Ms. Daisy's flowers.