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William Davis Merry Howard purchased the Rancho San Mateo Mexican land grant in 1846. The town is called Hillsborough because it was named after the town he lived in previously, which was Hillisborough in New Hampshire
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California became a State on this day. Sometimes it is celebrated as Admittance day.
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Hillsborough was incroporated on May 5th 1910 because of a 60-1 popular vote.
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The population of Hillsborough reaches 2500.
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In 1953 Hillsborough changed it's minimum lto size to half an acre.
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CFC's are chemicals that cause reactions in the ozone layer and as a result of these reactions ozone is destroyed. These chemicals have caused a hole in the ozone layer above Antarctica which lets dangerous UV rays enter the earth's atmosphere. This ban came into effect to prevent the destruction of the ozone layer.
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The speed limit was changed on Hayne road,Crystal Springs, West Santa Inez, and Skyline boulevard.
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In 2000 a ban against toy vehicles on public property was put into place. Toy vehicles include, skateboards, rollerblades, scooters or anything else similar.