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A military scientist operates a laser in a test environment.
Flag of Sikkim, prior to its 1975 annexation with India
Three-phase generator at the Lauffen power station
Reenactment of a covered wagon on the Oregon Trail
Teachers' Day refimprove
1204 – Fourth Crusade: Count was crowned the first Baldwin IX of Flanders Latin Emperor in Constantinople.
1527 – The Medici were driven from and a Florence republic was re-established.
1532 – Sir resigned as Thomas More Lord Chancellor of England.
saved for July 6
1771 – The —the final battle of the Battle of Alamance War of the Regulation, a rebellion in colonial North Carolina over issues of taxation and local control—was fought.
1811 – Peninsular War: An allied force of British, Spanish, and Portuguese troops clashed with the French at the south of Battle of Albuera Badajoz, Spain.
TFA for 2018
1843 – The first major wagon train heading for the Pacific Northwest set out on the with more than a hundred pioneers from Oregon Trail Elm Grove, Missouri.
1866 – was first prepared commercially by American Root beer pharmacist Charles Elmer Hires.
refimprove, date not in article
1877 – French President Patrice de Mac-Mahon dismissed Jules Simon and installed Albert, Duc de Broglie as Prime Minister, triggering a in the political crisis French Third Republic.
1891 – The opened in International Electrotechnical Exhibition Frankfurt, Germany, featuring the world's first long distance transmission of three-phase electric power from the generator 175 km (109 mi) away at Lauffen am Neckar.
needs more footnotes
1916 – The United Kingdom and France signed the , a secret agreement considered to have shaped the Middle East, defining the borders of Iraq and Syria.
Sykes–Picot Agreement refimprove section
1943 – Royal Air Force embarked on a raid to deploy Dambusters bouncing bombs on German dams in during the Second World War.
Operation Chastise refimprove
1960 – American physicist Theodore Maiman operated the first working at the laser Hughes Research Laboratories in Malibu, California.
1966 – Chinese leader Mao Zedong launched the officially as a campaign to rid China of its liberal bourgeois elements and to continue revolutionary Cultural Revolution class struggle.
1988 – A report by United States Surgeon General C. Everett Koop stated that the addictive properties of are similar to those of nicotine heroin and cocaine.
fact not in article; no article exists for the report
2003 – In the deadliest terrorist attack in Morocco's history, in a series of suicide bombings Casablanca killed 33 civilians and 12 out of the 14 bombers.
1866 – The United States Congress authorized the minting of the country's first copper-nickel five-cent piece, the . Shield nickel
1918 – The was passed in the United States, forbidding Americans from using "disloyal, profane, scurrilous, or abusive language" about the Sedition Act United States government, flag, or armed forces during the ongoing World War I.
1959 – The Triton Fountain (pictured) in Valletta, one of Malta's most important Modernist landmarks, was turned on for the first time.
1961 – The Military Revolution Committee, led by Park Chung-hee, carried out against the government of a bloodless coup Yun Bo-seon, ending the Second Republic of South Korea. 1975 – Based on the results of a referendum held about one month earlier, Sikkim abolished its monarchy and was annexed by India, becoming its . 22nd state
(d. 1657) Andrew Bobola · (b. 1718) Maria Gaetana Agnesi · (d. 1910)