Causes include controversy over admitting Missouri as a slave state in 1820, the acquisition of Texas as a slave state in 1845 and the status of slavery in western territories won as a result of the Mexican – American War and the resulting Compromise of 1850.

* 1788 – Adoniram Judson, American missionary ( d. 1850 )

* 1850 – Reginald Heber Roe, Australian academic and educator ( d. 1926 )

* 1802 – Nikolaus Lenau, Austrian poet ( d. 1850 )

* 1850 – Charles Richet, French physiologist, Nobel Prize laureate ( d. 1935 )

The 1830 – 1850 period later became known as the era of Jacksonian democracy.

His father was a cultured man, and his mother was the sister of Raphael Georg Kiesewetter ( 1773 – 1850 ), the musical archaeologist and collector.

* 1850 – Marcelo H. del Pilar, Filipino writer, journalist, and revolutionary ( d. 1896 )

Albert Goodwill Spalding ( Byron, Illinois September 2, 1850 – September 9, 1915 in Point Loma, San Diego, California ) was a professional baseball player, manager and co-founder of A. G. Spalding sporting goods company.

* 1918 – Karl Ferdinand Braun, German physicist, Nobel Prize laureate ( b. 1850 )

* John Pryor, 1846 – 1850

* 1770 – Georg Sverdrup, Norwegian philologist ( d. 1850 )

* 1770 – William Wordsworth, English poet ( d. 1850 )

* 1850 – William Lisle Bowles, English poet and critic ( b. 1762 )

The estate was sold on 4 June 1883 to Sir Herbert Samuel Leon ( 1850 – 1926 ), a financier and Liberal MP.

* Frédéric Bastiat ( 1801 – 1850 ), classical-liberal author and political economist

The Christadelphian community in Britain effectively dates from Thomas's first lecturing tour ( May 1848 – October 1850 ).

** Leonard Darwin ( 1850 – 1943 ), soldier, politician, and activist

* 1850 – History of New Zealand: The Charlotte-Jane and the Randolph bring the first of the Canterbury Pilgrims to Lyttelton, New Zealand.

* 1778 – Joseph Louis Gay-Lussac, French physicist and chemist ( d. 1850 )

* 1850 – William Sturgeon, English physicist and inventor ( b. 1783 )

* 1935 – Charles Richet, French physiologist, Nobel laureate ( b. 1850 )

* 1761 – Marie Tussaud, French creator of wax sculptures ( Madame Tussauds ) ( d. 1850 )

His first wife, Juliet Macpherson ( c. 1776 – 1850 ), was a daughter of James Macpherson ( 1736 – 1796 ), a probable translator of Ossian poems.

His younger son, Emil Gottfried ( 1767 – 1792 ), and his daughter, Franziska ( 1769 – 1850 ), were friends of Mozart ; Mozart wrote two songs for Gottfried to publish under Gottfried's name ( K. 520 Als Luise … and K. 530 Das Traumbild ) and gave piano lessons to Franziska.

In 1850 he settled as a private tutor in the little town of Treptow an der Tollense in Pomerania ( today Altentreptow, Mecklenburg-Vorpommern ), and was now able to marry Luise Kuntze, the daughter of a Mecklenburg pastor.

Nevertheless, she scored a real triumph in 1850, when she made her operatic debut at the Paris Opéra performing the role of " Fidès " in Meyerbeer's Le prophète, which had been created the year before by no less than Pauline Viardot.

* September 17 – Henri Louis Le Chatelier, French chemist ( Le Chatelier's principle ) ( b. 1850 )

* Bernard Bonnejean " Huysmans avant À Rebours: les fondements nécessaires d ' une quête en devenir ", in Le Mal dans l ' imaginaire français ( 1850 – 1950 ), éd.

In 1850 Le Strange, an amateur architect and painter, appointed a land agent to survey the site and prepare a layout, while he himself drew and painted a map and a perspective of the scheme, showing shops, a station and a church.

In 1850, Covillaud, Ramirez, Sampson, and Sicard hired Augustus Le Plongeon, a French surveyor, to create a plan for a town called Jubaville, later called Yubaville.

** The Queen's Necklace ( Le Collier de la Reine, 1849 – 1850 )

After 1850, Huebner notes a continuing tradition of operas at Paris where ' principals appear with chorus at the end of an act and where private intrigue conjoins a well-articulated public dimension in the plot ' and cites amongst others Charles Gounod's La nonne sanglante ( 1854 ), Ambroise Thomas's Hamlet and operas by Jules Massenet, amongst them Le Roi de Lahore ( 1877 ) and Le Cid ( 1885 ).

Wagner's disciple Theodor Uhlig followed Schumann's Judaeophobic line in his 1850 review of Le prophète:

The collodion process is said to have been invented, almost simultaneously, by Frederick Scott Archer and Gustave Le Gray in about 1850.

Three years later he established, in conjunction with Duveyrier, a daily journal, entitled Le Credit, which was discontinued in 1850.

* Mercedes Volait Le Caire-Alexandrie: Architectures Européennes 1850 – 1950 ( co-edition IFAO / CEDEJ 2001 )

Le Napoléon ( 1850 ) | Le Napoléon ( 1850 ), the first steam battleship

The first purpose-built steam battleship was the 90-gun Le Napoléon in 1850.

In 1850, Girardin wrote an article called Le Socialisme et l ' Impot.

It was later published in Le Chansonnier des collèges ( Quebec 1850 ), this time with music, but with only four of the original six verses.

Le Napoléon ( 1850 ) | Le Napoléon ( 1850 ), the first steam battleship in history.