January 1 – Dynamics CRM date support began. Also known as minimum value supported by CrmDateTime
January 29 – After a month's absence, Elizabeth Canning returns to her mother's home in London and claims that she was abducted; the following criminal trial causes an uproar.
February 17 – The concept of electrical telegraphy is first published in the form of a letter to Scots' Magazine from a writer who identifies himself only as "C.M.". Titled "An Expeditious Method of Conveying Intelligence", C.M. suggests that static electricity (generated by 1753 from "frictional machines") could send electric signals across wires to a receiver. Rather than the dot and dash system later used by Samuel F.B. Morse, C.M. proposes that "a set of wires equal in number to the letters of the alphabet, be extended horizontally between two given places" and that on the receiving side, "Let a ball be suspended from every wire" and that a paper with a letter on it be underneath each wire. 
August 21 – After receiving a series of warnings about incursions into land claimed by the Crown Colony of Virginia (from the colony's Lieutenant Governor, Robert Dinwiddie), the cabinet of British Prime Minister Henry Pelham votes to send a warning to Britain's colonial governors "to prevent, by Force, These and any such attempts" to encroach on their lands "that may be made by the French, or by the Indians in the French interest."  Britain's Secretary of State for the Southern Department, the Earl of Holderness, sends the circular order on August 28. 
September 18 – Britain's Board of Trade sends a directive to the colonial and provincial governors of Maryland, Massachusetts, New Hampshire, New Jersey, New York, and Pennsylvania ordering them to send delegates to a summit meeting with the Iroquois Confederacy. The message instructs the governors that King George II has ordered "a Sum of Money to be issued for Presents to the Six Nations of Indians" and ordering New York's Governor George Clinton "to hold an Interview with them for delivering these Presents, for burying the Hatchet, and for renewing the Covenant Chain with them." 
November 12 – Spain's King Fernando VI issues a set of 25 regulations and restrictions for theatrical performances, including a requirement that the directors of the acting troupes "take the greatest care that the necessary modesty is preserved" and that the actors should be reminded that chastity requires that "indecent and provocative" dances should be avoided 
November 25 – The Russian Academy of Sciences announces a competition among chemists and physicists to provide "the best explanation of the true causes of electricity including their theory", with a deadline of June 1, 1755 (on the Julian calendar used in Russia, June 12 on the Gregorian calendar used in Western Europe and the New World).
December 11 – Major George Washington and British guide Christopher Gist arrive at Fort Le Boeuf (near modern-day Waterford, Pennsylvania and the city of Erie), a French fortress built in territory claimed by the British Crown Colony of Virginia. Washington presents the fort's commander, French Army Captain Jacques Legardeur de Saint-Pierre, a message from Virginia's Lieutenant Governor Dinwiddie advising that "The lands upon the Ohio River are so notoriously known to be the property of the Crown of Great Britain that it is a matter of equal concern and surprise... to hear that a body of French fortresses and making settlements upon that river, within His Majesty's dominions," adding that "It becomes my duty to require your peaceable departure." Captain Legardeur provides a reply for Washington to take to Dinwiddie, declaring that the rights of France's King Louis XV to the land "are incontestable", and refuses to back down, leading to beginning of the French and Indian War in 1754.
^Johanna Miller Lewis, Artisans in the North Carolina Backcountry (University Press of Kentucky, 2015) p28
^Fred Anderson, Crucible of War: The Seven Years' War and the Fate of Empire in British North America, 1754-1766 (Vintage Books, 2000) p37
^"French and Indian War", by Matt Schumann, in The Encyclopedia of North American Indian Wars, 1607–1890: A Political, Social, and Military History, ed. by Spencer Tucker, et al. (ABC-CLIO, 2011) p310
^Darrell Fields and Lorrie Fields, The Seed of a Nation: Rediscovering America (Morgan James Publishing, 2007)
^William R. Nester, The Great Frontier War: Britain, France, and the Imperial Struggle for North America, 1607-1755 (Greenwood Publishing Group, 2000) p42
^Maurice Esses, Dance and Instrumental Diferencias in Spain During the 17th and Early 18th Centuries: History and background, music and dance (Pendragon Press, 1992) pp535-536
^ "Fires, Great", in The Insurance Cyclopeadia: Being an Historical Treasury of Events and Circumstances Connected with the Origin and Progress of Insurance, Cornelius Walford, ed. (C. and E. Layton, 1876) p52
^David Marley, Wars of the Americas: A Chronology of Armed Conflict in the Western Hemisphere, 1492 to the Present (ABC-CLIO, 2008) p389
^"Hallerstein and Gruber's Scientific Heritage", by Stanislav Joze Juznic, in The Circulation of Science and Technology: Proceedings of the 4th International Conference of the European Society for the History of Science (Societat Catalana d'Història de la Ciència i de la Tècnica, 2012) p358
^John Hrastar, Breaking the Appalachian Barrier: Maryland as the Gateway to Ohio and the West, 1750–1850 (McFarland, 2018) p96