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 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 he tried to find a medicine to improve appetite and digestive well-being of the soldiers.

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 the age of 38, and with a remarkable academic career behind him, Malpighi decided to dedicate his free time to anatomical studies.

Around 1844, she married a free black man named John Tubman.

Around 1100 it was the centre of struggle between the free communes of Milan and Como: in the 14th century it was acquired by the Visconti, Dukes of Milan.

* Sainsbury's Organic ( SO Organic ): Around 500 lines of food and drink which are derived from sources free from fertiliser or pesticides.

Around the turn from the 19th to the 20th century, Scottish-American businessman Andrew Carnegie donated over $ 60 million, which was a vast fortune in 20th-century dollars, to build over 2, 811 free public library buildings in the United States.

Around the same time the elder Edwards managed to free the gag and raised the alarm shouting, " Treason!

Around Town Magazine is the free local lifestyle magazine for Bridgend.

Around 1996, a group of free and open source software developers started a project called FreeWin95 to implement a clone of Windows 95.

Around January 26, 2010, NASA conceded defeat in its efforts to free the rover and stated that it would now function as a stationary science platform.

Around the same time, the Kiwi Share agreement was drawn up, which included a provision that the company retained free local calling for residential customers.

In a speech in the House, Wilmot said, “ I plead the cause and the rights of white freemen I would preserve to free white labor a fair country, a rich inheritance, where the sons of toil, of my own race and own color, can live without the disgrace which association with negro slavery brings upon free labor .” Around the same time, however, Wilmot, in a New York speech, spoke of the ultimate demise of slavery when he argued, “ Keep it within given limits … and in time it will wear itself out.

; Season 6 ( 1992 ): In the first episode of the season, Rock Around the Block, Krang sets up a super-laser to free the Technodrome from its icy prison.

Around this time Reis announced in a fanzine that all fans with Rocket from the Crypt tattoos would be allowed into the band's shows for free, for life, causing tattoos of their logo to become an international phenomenon.

Around 2009 / 2010 the area became less run down with Spencer Place being prostitute free, the bus lane on Chapeltown Road being extended to serve the full length of the road, the addition of a bicycle lane, the decaying buildings getting repaired and the addition of the Reginald Center, a joint service centre which replaces the original library in the area ( similar to the Compton Center in Harehills.

Around the time of the group's formation, Anastasio mentioned in interviews that he based the ensemble around Sun Ra's free jazz ensembles of the mid-twentieth century.

Around 2, 000 copies of the free papers were taken from news racks by three officers and later found stored at the Mission District police station.

Around the year 1000 Sirmione was probably a free comune, but fell in the hands of the Scaliger in the early 13th century.

Around 1900, many regions were opened by the government to settlement through a scheme by which inward migrants received ownership of land free in return for cultivating it.

Around 2001 a number of the CFD providers realised that CFDs have the same economic effect as financial spread betting except that the tax regime was different, making it in effect tax free for clients.

Around the monastery some of the last free roaming feral cattle in Hong Kong can be seen, being the descendants of the cattle released after the closure of the dairy farm.

Around the time Stunt Race FX was released in the United States, Nintendo of America teamed up with Kellogg's and Mattel to give away a promotional, Hot Wheels brand, F-Type race car to people who mailed two proofs from boxes of Apple Jacks to Kellogg's to receive it for free.

Around 748, Kyriakos marched north into Egypt at the head of an army said to number 100, 000 men to free the Patriarch of Alexandria Michael, whom Abd al-Malik had thrown into prison.

Around the time of the American Revolution, East Liberty was a free grazing area in Allegheny County located a few miles east of the young, growing town called Pittsburgh.

The lakeside is under UNESCO protection, and buildings are not allowed, resulting in reed bed and a rich fauna and flora: Around 400 plant species in the lake and 19 species in its tributaries.