|Centuries:||17th century – 18th century – 19th century|
|Decades:||1760s 1770s 1780s – 1790s – 1800s 1810s 1820s|
|Years:||1795 1796 1797 – 1798 – 1799 1800 1801|
|1798 in topic:|
|Subjects: Archaeology – Architecture –|
|Art – Literature ( Poetry) – Music – Science|
|Countries: Australia – Canada – Great Britain – United States|
|Leaders: State leaders – Colonial governors|
|Category: Establishments – Disestablishments|
|Births – Deaths – Works|
Year 1798 (MDCCXCVIII) was a common year starting on Monday (link will display the full calendar) of the Gregorian calendar (or a common year starting on Friday of the 11-day slower Julian calendar).
Events of 1798
January - June
- January 22 - Coup d'état in the Netherlands ( Batavian Republic). Unitarian Democrat Pieter Vreede makes an end to the power of the parliament (with a conservative-moderate majority).
- February 10 - The Papacy was removed from power by the French General Louis Alexandre Berthier.
- March 7 - French forces invade the Papal States and establish the Roman Republic.
- April 7 - The Mississippi Territory is organized from territory ceded by Georgia and South Carolina and is later twice expanded to include disputed territory claimed by both the U.S. and Spain.
- April 26 - France annexes Geneva.
- May 24 - Irish nationalists known as the Society of United Irishmen launch a bloody failed rebellion against British occupation with some support from France. The United Irishmen are unique amongst Irish nationalist movements in that they manage to unify Catholics and Protestants around republican ideals, the rebellion is quashed in October of 1798.
- June 12
- French take Malta.
- Coup d'état in the Netherlands ( Batavian Republic). Moderates depose Pieter Vreede.
- June 13 - Mission San Luis Rey de Francia is founded.
July - December
- July 1 - Napoleon's troops land in Egypt.
- July 7 - Quasi-War: The U.S. Congress rescinds treaties with France sparking the 'war.'
- July 11 - The United States Marine Corps was (re-?)established.
- July 14 - The Alien and Sedition Acts become United States law making it a federal crime to write, publish, or utter false or malicious statements about the United States government.
- July 16 - Signing into law the Relief of Sick and Disabled Seamen Act, creating the US Marine Hospital Service, the forerunner to the current US Public Health Service.
- July 21 - Napoleon defeats Ottoman forces near the Pyramids.
- July 24 - Napoleon occupies Cairo.
- July 31 - Second elections in the Netherlands ( Batavian Republic). No general elections this time.
- August 1 - Horatio Nelson defeats the French navy under Admiral Brueys at the Battle of the Nile (near Abu Qir): Nelson himself is wounded on the head.
- August 22 - French troops land at Kilcummin in County Mayo to assist Irish rebellion.
- September 10 - Conclusion of the Battle of St. George's Caye; off the coast of British Honduras (now Belize), a group of British nationals and African slaves defeat a force sent from Mexico to drive them out.
- September 18 - Lyrical Ballads published anonymously by Samuel Taylor Coleridge and William Wordsworth.
- The first (anonymous) publication occurs of An Essay on the Principle of Population by Thomas Malthus.
- Franz Xaver, Baron Von Zach, Scientific Editor, Astronomer, begins editing journals about navigation and the geographic positions of cities.
- XYZ Affair in the U.S., followed by naval skirmishes but no war is declared.
- First mechanical music boxes are built.
- Alessandro Volta and La Place discover electricity.
- The Afghans Army occupied Lahore in Punjab.
- Timothy Dexter - A Pickle for the Knowing Ones or Plain Truth in a Homespun Dress.
- Aarau becomes the temporary capital of the Helvetic Republic.
- Alois Senefelder invents lithography.
- Eli Whitney contracts with the US Federal Government for 10,000 rifles, which he produces with interchangeable parts.
- Charles Brockden Brown publishes the first American Novel Wieland or The Transformation an American Tale.
- First census in Brazil. 2 million blacks in a total population of 3.25 million.
- The Ayrshire (Earl of Carrick's Own) Yeomanry, a British Yeomanry Cavalry Regiment, formed by The Earl of Cassillis at Culzean Castle, Ayrshire in 1794 is adopted onto the British Army list.
- French Revolution (1789-1799 Revolutionary Wars (1792-1802)- Second Coalition/Egyptian Campaign.
- May-October - Irish Rebellion of 1798.
|Ab urbe condita||2551|
|British Regnal year||38 Geo. 3 – 39 Geo. 3|
|Chinese calendar|| 丁巳年十一月十五日
— to —戊午年十一月廿五日
|- Vikram Samvat||1854–1855|
|- Shaka Samvat||1720–1721|
|- Kali Yuga||4899–4900|
|- Ǹrí Ìgbò||798–799|
|Japanese calendar|| Kansei 10
|Juche calendar||N/A (before 1912)|
|Julian calendar||Gregorian minus 11 days|
|Minguo calendar||114 before ROC
|Thai solar calendar||2341|
- January 14 - Johan Rudolf Thorbecke, Dutch politician (d. 1872)
- January 17 - Auguste Comte, French sociologist (d. 1857)
- January 20 - Anson Jones, 5th and last President of the Republic of Texas (d. 1858)
- March 13 - Abigail Fillmore, First Lady of the United States
- April 2 - August Heinrich Hoffmann von Fallersleben, German writer (d. 1874)
- April 26 - Eugène Delacroix, French painter (d. 1863)
- April 28 - Duncan Forbes, British linguist (d. 1868)
- June 12 - William Abbot, English actor (d. 1843)
- June 14 - František Palacký, Czech historian and politician (d. 1876)
- June 29 - Giacomo Leopardi, Italian writer (d. 1837)
- October 2 - King Charles Albert of Sardinia (d. 1849)
- December 24 - Adam Mickiewicz, Polish writer (d. 1855)
- February 25 - Louis-Jules Mancini-Mazarini, Duc de Nivernais, French diplomat and writer (b. 1716)
- April 11 - Karl Wilhelm Ramler, German poet (b. 1725)
- April 29 - Nikolaus Poda von Neuhaus, German entomologist (b. 1723)
- May 19 - William Byron, 5th Baron Byron, English dueler (b. 1722)
- June 4 - Giacomo Casanova, Italian adventurer and writer (b. 1725)
- June 21 - John Kelly of Killanne, Irish republican
- June 25 - Thomas Sandby, English cartographer and architect (b. 1721)
- July 17 - Henry Joy McCracken, Irish republican
- July 21 - François Sebastien Charles Joseph de Croix, Count of Clerfayt, Austrian field marshal (b. 1733)
- August 1 - François-Paul Brueys D'Aigalliers, French admiral (killed in battle) (b. 1753)
- August 21 - James Wilson, American politician (b. 1742)
- August 24 - Thomas Alcock, English clergyman (b. 1709)
- September 21 - George Read, American lawyer and signer of the Declaration of Independence (b. 1733)
- November 19 - Theobald Wolfe Tone, Irish republican
- December 4 - Luigi Galvani, Italian physicist (b. 1737)