unique to vs unique

Some examples from the web:

• ... each one new, violent, unique — Robert Coover> b : distinctively characteristic : peculiar 1 <this is not a condition unique to California — Ronald Reagan>.
• a species unique to Australia. 4. limited to a single outcome or result; without alternative possibilities: Certain types of problems have unique solutions. 5.
• Their behavior was by no means unique to history: In the 1830 Swing Riots of the United Kingdom, farmers vandalized the diabolical labor-saving contraption ...
• 1.1 (unique to) Belonging or connected to (one particular person, place, or thing): a style of architecture that is unique to Portugal. More example sentences.

Some examples from the web:

• Each item number is unique throughout the declaration.
• Emotions are surely what make man so unique.
• Manufacturers shall encode the unique identifier in a two-dimensional barcode.
• You know, writers are a unique breed.
• Abe possesses a unique frontal lobe.
• There's nothing unique about that shovel.
• Maybe this is something unique about diarrhea.
• Or our solar system is somehow unique.
• Just some understanding of my unique perspective.
• But nothing this unique or well-preserved.
• European civilisation has a unique place in human history.
• All reports shall have a unique report identifier.
• Veterinary certificates must bear a unique identifying number.
• Their job was unique in that they were dropped out of planes.
• It's a unique and propitious occasion.
• But I know that it's something unique.
• He knows that I am unique and therefore indispensable.
• If there is no unique trade ID in place, a unique code should be generated and agreed with the other counterparty.
• A unique talent for pattern recognition.
• Your answers are unique in summation.