Large scale shipbuilding began in the 1790s, beginning with schooners for local trade moving in the 1820s to larger brigs and brigantines, mostly built for British shipowners.

British radicals, from the 1790s to the 1820s, concentrated on parliamentary and electoral reform, emphasizing natural rights and popular sovereignty.

The fundamental principles of electricity generation were discovered during the 1820s and early 1830s by the British scientist Michael Faraday.

At least by the mid 1820s, the army and navy were going out from the Colony to attack chiefs whose behaviour did not conform to British dictates.

In 2010, British archivist Adrian Glew discovered references to a real-life hunchback who was a foreman of a government sculpting studio in Paris in the 1820s who worked on post-Revolution restorations to the Cathedral.

The idea of a National Gallery of British Art was first proposed in the 1820s by Sir John Leicester, Baron de Tabley.

During the 1820s, the British Consul General to Egypt, Henry Salt, sent several further portraits to Paris and London.

When the British government allowed control of the Gold Coast settlements to revert to the British African Company of Merchants in the late 1820s, relations with Asante were still problematic.

These areas were part of the Afghan Empire from 1709 until the 1820s when the Sikh Empire followed by British invaded and took possession.

In the 1820s, Dubai was referred to as Al Wasl by British historians.

The 1820s saw the commencement of the Plymouth Brethren in Dublin, Ireland and Georgetown, British Guyana.

Gadsden served under Gen. Jackson both during the War of 1812 against the British Army, and against the American Indians in the newly purchased ( 1819 ) Territory of Florida during the early 1820s.

From the early 1820s the British Navy began building a number of steam-powered small warships, amd by the 1830s many navies were experimenting with steam-powered warships.

These earliest explorers were likely British and American fur-trappers and traders in the 1820s and 1830s, although it is possible that Spanish explorers reached the southern edge of the Shasta Cascade region before 1820.

The British Hudson's Bay Company entered the coast trade in the 1820s with the intention of driving the Americans away.

British diplomatic pressure was sufficient to prevent Spain from attempting to seriously reassert its control over its lost colonies during the late 1820s and early 1830s.

The company ’ s first fleet of just five vessels faced tough competition from well-established players in the early days, including large British and European consortia which had dominated the major trade routes since the 1820s.

Ceremonial bodyguard of the Sheikh of Bornou in his full regalia, after a drawing by a British visitor in the 1820s.

During the 1820s, three British adventurers named John Buffett, John Evans and George Nobbs settled on the island and married children of the mutineers.

The Goulburn River was named after Henry Goulburn, a British politician in the 1820s.

Catholic settlers first arrived in the 1820s, with British settlement of New Zealand.

Manne, who called the book ‘ one of the most implausible, ignorant and pitiless books about Australian history written for many years ’, himself summed up the case against Windschuttle, noting that Windschuttle's evidence for Aboriginal deaths is derived from a scholar, Plomley, who denied that any estimate for them could be made from the documentary record ; that a scrupulous conservative scholar, H. A. Willis, using exactly the same sources as Windschuttle, came up with a figure of 188 violent deaths, and another 145 rumoured deaths ; that Windschuttle's method excludes deaths of aborigines who were wounded, and later died ; that all surviving Aborigines transported by Robinson to Flinders ' Island bore marks of violence and gunshot wounds ' perpetrated on them by depraved whites '; that Windschuttle cannot deny that between 1803 and 1834 almost all Tasmanian Aborigines died, and the only evidence for disease as a factor before 1829 rests on a single conversation recorded by James Bonwick, and that Aboriginal women who lived with sealers did not, however, die off from contact with bearers of foreign disease ; that Windschuttle likened Aboriginal attacks on British settlers to ‘ modern-day junkies raiding service stations for money ’, whereas both colonial records and modern historians speak of them as highly ' patriotic ', attached to their lands, and engaged in a veritable war to defend it from settlement ; that by Windschuttle's own figures, the violent death rate of Aborigines in Tasmania in the 1820s must have been 360 times the murder rate in contemporary New York ; that Windschuttle shows scarce familiarity with period books, citing only 3 of the 30 books published on Van Diemen's land for the period 1803-1834, and with one of them confuses the date of the first visit by the French with the publication date of the volume that recounted their expedition ; that it is nonsensical to argue that a people who had wandered over an island and survived for 34, 000 years had no attachment to their land ; that Windschuttle finds no native words in 19th century wordlists for ' land ' to attest to such an attachment, when modern wordlists show 23 entries under ' country '.

Snobbery is a defensive expression of social insecurity, flourishing most where an Establishment has become less than secure in the exercise of its traditional prerogatives, and thus it was more an organizing principle for Thackeray's glimpses of British society in the threatening atmosphere of the 1840s than it was of Hazlitt, writing in the comparative social stability of the 1820s.

In the 1820s and 1830s, most of the Stockbridge Indians moved to Shawano County, Wisconsin, where they were promised land by the US government under the policy of Indian removal.

The area was settled by Creek and Seminole, who the federal government relocated to the area in the 1820s and 1830s.

The Kansa lived along the rivers of this region in villages until they were forcibly removed in the 1820s by the American government to make room for the Shawnee.

During the 1820s, Thornton was a member of the prestigious society, Columbian Institute for the Promotion of Arts and Sciences, who counted among their members former presidents Andrew Jackson and John Quincy Adams and many prominent men of the day, including well-known representatives of the military, government service, medical and other professions.

The expansion of migration into the Southeastern United States in the 1820s to the 1830s forced the federal government to deal with the " Indian question.

But when large numbers of lead miners streamed into the country south of the river in the 1820s, the U. S. government began to refer to it differently in debates and legislation.

A wild but gifted orator and a vitriolic journalist, Wentworth became the colony's leading political figure of the 1820s and ' 30s, calling for representative government, the abolition of transportation, freedom of the press and trial by jury.

Beginning in the 1820s, the area that would become Kansas was set aside as Indian territory by the U. S. government, and was closed to settlement by whites.

Furthermore, the imposition of government customs duties, the temporary banning of the felling of kauri trees, and the government control over the sale of land all contributed to an economic depression for the northern Māori and an end to the free wheeling lawless debauchery that had prevailed in the north since the 1820s.

Anglo-American immigrants, primarily from the Southern United States, began emigrating to Mexican Texas in the early 1820s at the request of the Mexican government, which sought to populate the sparsely inhabited lands of its northern frontier.

During the 1820s, Crawford was a member of the prestigious society Columbian Institute for the Promotion of Arts and Sciences, who counted among their members former presidents Andrew Jackson and John Quincy Adams and many prominent men of the day, including well-known representatives of the military, government service, medical and other professions.

During the 1820s, Wilkes was a member of the prestigious society, Columbian Institute for the Promotion of Arts and Sciences, which counted among its members former presidents Andrew Jackson and John Quincy Adams and many prominent men of the day, including well-known representatives of the military, government service, medical and other professions.

During the 1820s, Poinsett was a member of the prestigious society, Columbian Institute for the Promotion of Arts and Sciences, who counted among their members former presidents Andrew Jackson and John Quincy Adams and many prominent men of the day, including well-known representatives of the military, government service, medical and other professions.

The fund was abandoned by Lord Liverpool's government only in the 1820s.

During the 1820s, Berrien was a member of the prestigious society, Columbian Institute for the Promotion of Arts and Sciences, who counted among their members former presidents Andrew Jackson and John Quincy Adams and many prominent men of the day, including well-known representatives of the military, government service, medical and other professions.

During the 1820s, Ingham was a member of the prestigious society, Columbian Institute for the Promotion of Arts and Sciences, who counted among their members former presidents Andrew Jackson and John Quincy Adams and many prominent men of the day, including well-known representatives of the military, government service, medical and other professions.

During the 1820s, Barry was a member of the prestigious society, Columbian Institute for the Promotion of Arts and Sciences, who counted among their members former presidents Andrew Jackson and John Quincy Adams and many prominent men of the day, including well-known representatives of the military, government service, medical and other professions.

During the 1820s, Rush was a member of the prestigious society, Columbian Institute for the Promotion of Arts and Sciences, who counted among their members former presidents Andrew Jackson and John Quincy Adams and many prominent men of the day, including well-known representatives of the military, government service, medical and other professions.

During the 1820s, Wirt was a member of the prestigious society, Columbian Institute for the Promotion of Arts and Sciences, who counted among their members former presidents Andrew Jackson and John Quincy Adams and many prominent men of the day, including well-known representatives of the military, government service, medical and other professions.

During the 1820s, Rodgers was a member of the prestigious society, Columbian Institute for the Promotion of Arts and Sciences, who counted among their members former presidents Andrew Jackson and John Quincy Adams and many prominent men of the day, including well-known representatives of the military, government service, medical and other professions.

During the 1820s, Barbour was a member of the prestigious society, Columbian Institute for the Promotion of Arts and Sciences, who counted among their members former presidents Andrew Jackson and John Quincy Adams and many prominent men of the day, including well-known representatives of the military, government service, medical and other professions.