Before 1800 astronomers had isolated observational errors resulting

The crossing of the St. Bernard Pass had allowed the French to surprise the Austrian army and win victory at the Battle of Marengo on 14 June 1800.

In December 1800, the United States House passed an appropriations bill for $ 200, 000 to build the mausoleum, which was to be a pyramid that had a base square.

The Great Auk had disappeared from Funk Island by 1800, and an account by Aaron Thomas of HMS Boston from 1794 described how the bird had been systematically slaughtered until then:

In terms of the boundaries of 1914, Germany in 1700 had a population of 16 million, increasing slightly to 17 million by 1750, and growing more rapidly to 24 million by 1800.

Around 1800 the Catholic monasteries, which had large land holdings, were nationalized and sold off by the government.

Historically, land owners developed most roads and later Turnpike Trusts collected tolls so that as early as 1800 Ireland had a road network.

A total of 1, 454 engines had been built by 1800.

Both of Watt's basic engine types were commercially very successful, and by 1800, the firm Boulton & Watt had constructed 496 engines, with 164 driving reciprocating pumps, 24 serving blast furnaces, and 308 powering mill machinery ; most of the engines generated from 5 to.

By 1800 he had amassed almost a quarter of a million dollars, and had become one of the leading figures in the fur trade.

He won all the same states that his father had won in the election of 1800: the New England states, New Jersey, and Delaware, as well as parts of New York and a majority of Maryland.

By 1800 the coast of the Pacific Northwest had been thoroughly explored by maritime fur traders.

Napoleon Bonaparte had gained Louisiana for French ownership from Spain in 1800 under the Treaty of San Ildefonso, after being a Spanish colony since 1762.

The territory's boundaries had not been defined in the 1762 Treaty of Fontainebleau that ceded it from France to Spain, nor the 1800 Third Treaty of San Ildefonso ceding it back to France, nor the 1803 Louisiana Purchase agreement ceding it to the United States.

The city started to expand, and in 1800 had 38, 054 inhabitants.

By 1800 the Spanish population had reached 25, 000, but Apache and Comanche raids on Hispanic settlers were common until well into the period of U. S. occupation.

By 1800, most Congregationalist churches in Boston had Unitarian preachers teaching the strict unity of God, the subordinate nature of Christ, and salvation by character.

In March 1800, Hermann alerted the French scientist George Cuvier to the existence of Collini's fossil, believing that it had been captured by the occupying armies of Napoleon and sent to the French collections in Paris ( and perhaps to Cuvier himself ) as war booty ; at the time special French political commissars systematically seized art treasures and objects of scientific interest.

By the autumn of 1800, the United States Navy and the Royal Navy, combined with a more conciliatory diplomatic stance by the government of First Consul Napoleon Bonaparte, had reduced the activity of the French privateers and warships.

He was delighted to learn that the island was owned by the United States government — it had been ceded by the New York State Legislature in 1800 for harbor defense.

He was the sixth child of Pieter Jiltes Tadema ( 1797 – 1840 ), the village notary, who had had three sons by a previous marriage, and the third child of his mother, Hinke Dirks Brouwer ( c. 1800 – 1863 ).

While the earlier inventors had produced electric lighting in laboratory conditions, dating back to a demonstration of a glowing wire by Alessandro Volta in 1800, Edison concentrated on commercial application, and was able to sell the concept to homes and businesses by mass-producing relatively long-lasting light bulbs and creating a complete system for the generation and distribution of electricity.

Twelve nativity scenes created before 1800 from Tesero were put on display in the Vatican audience hall.

Paul refused to give him an audience, and, worn out and ill, the old veteran died a few days afterwards on 18 May 1800, at Saint Petersburg.

In 1800 Napoleon crossed one of the mountain passes with an army of 40, 000.

The Virginia Report of 1799 – 1800, Touching the Alien and Sedition Laws ; together with the Virginia Resolutions of December 21, 1798, the Debate and Proceedings thereon in the House of Delegates of Virginia, and several other documents illustrative of the report and resolutions

The bequest of a collection of books, engraved gems, coins, prints and drawings by Clayton Mordaunt Cracherode in 1800 did much to raise the Museum's reputation ; but Montagu House became increasingly crowded and decrepit and it was apparent that it would be unable to cope with further expansion.

Much of the musical repertoire written for harpsichord and organ from the period circa 1400 – 1800 can be played on the clavichord ; however, it does not have enough ( unamplified ) volume to participate in chamber music, with the possible exception of providing accompaniment to a soft baroque flute, recorder, or single singer.

Apple introduced 2880 × 1800 with Retina MacBook Pro at 15 inches on June 12, 2012.

* 1800 – War of the Second Coalition: Battle of Hohenlinden, French General Moreau defeats the Austrian Archduke John near Munich decisively, coupled with First Consul Napoleon Bonaparte's victory at Marengo effectively forcing the Austrians to sign an armistice and ending the war.

Alessandro Volta's battery, or voltaic pile, of 1800, made from alternating layers of zinc and copper, provided scientists with a more reliable source of electrical energy than the electrostatic machines previously used.

In and around 1800, embryology fused with comparative anatomy as the primary foundation of morphology.

The Avesta is believed to have been composed possibly as early as 1800 BC and written in ancient Ariana ( Aryana ), the earliest name of Afghanistan which indicates an early link with today's Iranian tribes to the west, or adjacent regions in Central Asia or northeastern Iran in the 6th century BC .< ref >

# Lower montane forest – Natural forests with > 30 % canopy cover, between 1200 – 1800 m altitude, with any seasonality regime and leaf type mixture.

Sade critiqued the genre in the preface of his Reflections on the novel ( 1800 ) which is widely accepted today, stating that the Gothic is " the inevitable product of the revolutionary shock with which the whole of Europe resounded ".

After 1800, instead of forming grains by hand or with sieves, the damp millcake was pressed in molds to increase its density and extract the liquid, forming presscake.

The population in 1800 was heavily rural, with only 10 % of the people living in communities of 5000 or more people, and only 2 % living in cities of more than 100, 000.

The Act of Union of 1800 formally assimilated Ireland within the British political process and from 1 January 1801 created a new state called the United Kingdom of Great Britain and Ireland, which united the Kingdom of Great Britain with the Kingdom of Ireland to form a single political entity.

In later poems, since 1800, hendecasyllables are often used without a strict system, with few or no rhymes at all.

The development of bleaching powder ( calcium hypochlorite ) by Scottish chemist Charles Tennant in about 1800, based on the discoveries of French chemist Claude Louis Berthollet, revolutionised the bleaching processes in the textile industry by dramatically reducing the time required ( from months to days ) for the traditional process then in use, which required repeated exposure to the sun in bleach fields after soaking the textiles with alkali or sour milk.

The Criminal Lunatics Act 1800, passed with retrospective effect following the acquittal of James Hadfield, mandated detention at the regent's pleasure ( indefinitely ) even for those who, although insane at the time of the offence, were now sane.

In 1800, following the example of the Empress of China, the first American trading vessel to China, Astor traded furs, teas and sandalwood with Canton in China, and greatly benefited from it.

European output of books printed with movable types from Gutenberg to 1800

They were, however, separated by Cuvier in 1800 under the name of llama along with the guanaco.

The 1833 storm was not due to the recent passage of the comet, but from a direct impact with the previous 1800 dust trail.

* 1800 – With the church leadership driven out of Rome during an armed conflict, Pius VII is crowned Pope in Venice with a temporary papal tiara made of papier-mâché.

Ruth A. Drayer's book, Numerology, The Power in Numbers ( Square One Publishers ) says that around the turn of the century ( from 1800 to 1900 A. D .) Mrs. L. Dow Balliett combined Pythagoras ' work with Biblical reference.