Around 1820, Charles Xavier Thomas created the first successful, mass-produced mechanical calculator, the Thomas Arithmometer, that could add, subtract, multiply, and divide.

Around 1820, free reed designs began being created in Europe.

Around 1820 they had settled on the Zambian side at Feira ( now Luangwa ).

Around 1820 an estancia ( station ) was established a few miles north on the banks of the Santa Ana River to accommodate the Mission's sizeable cattle herd.

Around 1820, the two neighbouring villages of St-Arnoult and Crevon were joined with Blainville to become Blainville-Crevon.

Around 1820, the Japanese inventor Kunitomo Ikkansai developed various manufacturing methods for guns, and also created an air gun based on the study of Western knowledge (" rangaku ") acquired from the Dutch in Dejima.

Around 1820 the entire Zugspitzplatt was glaciated, but of this Platt Glacier ( Plattgletscher ) only the Northern and Southern Schneeferner remain.

Around 1820 a new loom was invented in Teufen, allowing embroidery in one go.

Around 1820 Samuel Budgett became a partner and the name became H. H.

Around 1820, William " Killymoon " Steward built one of the first tavern / inns in the area.

Around 1820 Bayre sculpted Hercules with the Erymanthean Boar, depicting Hercules during his third Labor, where he had to capture, live, a wild boar from Mount Erymanthos.

Around 1820 " General Geography " was established by Carl Ritter.

Around 1820, at age 19, Heber set out on his own.

Around 1820, it was known as Freeport.

Around 1820 the senior Rowland Hazard renamed the nearby industrial village to Wakefield after the town and family of the same name in England, who were friends of his.

Around 1820, Hicks made the first of his many paintings of The Peaceable Kingdom.

Around 1820, a mestizo rancher named Augustine Machado began grazing his cattle on the Ballona wetlands and claimed a fourteen-thousand acre Mexican land grant that stretched from modern-day Culver City to Pico Boulevard in Santa Monica.

Around 1035, the Lamtuna chieftain Abu Abdallah Muhammad ibn Tifat ( alias Tarsina ), tried to reunite the Sanhaja desert tribes, but his reign lasted less than three years.

Around the same time, East Bay Ray had tried to pressure the rest of the band to sign to the major record label Polydor Records ; Biafra stated that he was prepared to leave the group if the rest of the band wanted to sign to the label, though East Bay Ray asserts that he recommended against signing with Polydor.

Around 1800 it was tried to create a third West Indian Company, without any success.

Around this time Major – who in an unfortunate phrase denounced the Labour Leader John Smith as " Monsieur Oui, the poodle of Brussels " – tried to demand an increase in the Qualified Majority needed for voting in the newly-enlarged European Union ( i. e. making it easier for Britain, in alliance with other countries, to block federalist measures ).

Around the same time Mary was removed from his custody, Shrewsbury and Bess separated for good — they had been apart off-and-on since about 1580, and even Queen Elizabeth had tried to get them to reconcile.

Around that time, Smith said he wanted to improve his singing, the opposite of his goal in 1984: he remarked in the documentary Ten Imaginary Years that he tried to sing badly on the album The Top.

Around Easter 1088, Odo of Bayeux and many of the nobles revolted against the king and tried to place the king's elder brother Robert Curthose, Duke of Normandy, on the throne.

Around this time, Viacom, Gannett, Disney, Republic Pictures, General Electric, CBS, Time Inc., Hearst, News Corporation, TCI, Globo of Brazil, Aaron Spelling's Spelling Entertainment and Sony all tried to purchase MGM / UA.

Around this time he became unable to secure film roles, and in 1955 Kinski twice tried to commit suicide.

Around that time, Wang Fen ( 王芬 ) tried to recruit Cao Cao to join his coup to replace Emperor Ling with the Marquis of Hefei, but Cao Cao refused.

Around this time, Marlatt is quoted to saying, “ a time of transition for me as i tried to integrate my feminist reading with a largely male-mentored postmodernist poetic, at the same time coming out as a lesbian in my life as well as in my writing .”

Around the time of the lawsuit from Galoob, Nintendo tried to use other methods to thwart the Game Genie, using ROM checksums in later titles intended to detect the cheat modifications.

Around that time, he unsuccessfully tried to perform as an actor in a small theater.

Around 1955 she also wrote a partial autobiography, China Eggs, which covered her life up to about the time she left San Faustino, but she never tried to publish it.

Around 1907, he tried his hand at writing a legislative proposal, according to which the Romanian state was to extend citizenship all resident stateless persons who did not enjoy foreign protection — in its manuscript form, this document was kept by his friend Dimitrie Gusti.

* Around 1161 A. D. Senapati Ambud, a Somavanshi Kshatriya from Gujarat, from Anhilvaad, whose lineage runs back to Orissa somavanshis, tried to attack Mallikarjun Shilahaar and for this settles near the Dahanuka river ( Dahanu ).

Around 1940 he tried to reform the Nauruan language by making it more understandable for Europeans and Americans.

Around the age of thirteen, Kesler was cut from every AAA team he tried out for.

Around that time I tried to get famous by a childrens TV show.

Around the same time, Gaye's label Motown tried to get the artist to record in the current sound of the times, disco music.

Around 1901, the owner unsuccessfully tried to turn it into a show cave.

" Around that time residents tried to pressure area politicians into making the development more low-rise and further removed from the Preston Hollow community.

Around 1900, surgeons tried injecting paraffin into the lips without success.

Around 1583, Barozzi was tried by the Inquisition on an unknown charge and found guilty.