
1865
Juneteenth. Union soldiers arrived in Galveston, Texas, and announced that enslaved people there were free. The day is celebrated as Juneteenth.
Wikipedia: JuneteenthPhoto: 2C2KPhotography / Wikimedia Commons (CC BY 4.0)
5 moments from 1846 to 2018: discovery, creativity and courage, each with a source to read more.
5 moments

1865
Photo: 2C2KPhotography / Wikimedia Commons (CC BY 4.0)

1846
The first recorded baseball game using written rules much like today's was played in Hoboken, New Jersey.
Wikipedia: Alexander Cartwright
Photo: unattributed / Wikimedia Commons (Public domain)

1910
Sonora Smart Dodd organised the first Father's Day in Spokane, Washington, to honour her father, who raised six children alone.
Wikipedia: Father's DayWikipedia: Sonora Smart Dodd
Photo: Quintin Soloviev / Wikimedia Commons (CC BY 4.0)

1978
Jim Davis's lazy, lasagna-loving cat began appearing in newspapers across America.
Wikipedia: GarfieldWikipedia: Jim Davis (cartoonist)
Photo: Ducky / Wikimedia Commons (CC BY 2.0)

2018
The United States issued its 10,000,000th patent, for a way of measuring light.
Wikipedia: United States patent law
Photo: U.S. government / Wikimedia Commons (Public domain)
Moments chosen for discovery, creativity and courage. Each one links to a source where you can read more; photos are credited to their owners.