Interests on the territories and the navigation rights over the Platine region played a major role in many armed conflicts throughout the century, including the Argentine civil wars, the Cisplatine and Platine wars, and the Paraguayan War.

Brazil was victorious in three international conflicts ( the Platine War, the Uruguayan War and the Paraguayan War ) under Pedro II's rule, and it prevailed in several other international disputes and domestic strifes.

The Empire was unable to address the threat posed by Rosas until 1850, when an alliance was forged between Brazil, Uruguay and disaffected Argentines, leading to the Platine War and the subsequent overthrow of the Argentine ruler in February 1852.

Passage of the Tonelero during the Platine War ( 1851-52 ).

: Main Articles: Brazilian Independence War, Confederation of the Equator, Cisplatine War, War of the Ragamuffins, Cabanagem Rebellion, Balaiada Revolt, Platine War, Uruguayan War, Paraguayan War, Naval Revolts, Federalist Rebellion and War of Canudos

File: Exercito brasileiro 1851. JPG | Brazilian army officers during the Platine War ( 1851-1852 ).

; Timbre de Platine ( Platinum Stamp ) awarded by Opéra International magazine

Senator Charette-Poulin's professional achievements and participation on the boards of various organizations have earned her national and international recognition over the years, including the " Prix Marcel Blouin " for the best radio morning program in Canada in 1983, the " Médaille du Conseil de la vie française " in 1988, the " Ordre de la Pléaide " in 1995, an honorary Doctor of Law degree from Laurentian University in 1995, the insignia of “ Officier de l ' Ordre national de la Légion d ' Honneur de la France ” in 2003, the insignia of the Order of St. John in 2004, “ Trille de Platine ” in 2008, and “ Personnalité Richelieu International 2008 .”

The first Federalist leader in the Platine Region was José Gervasio Artigas, who opposed the centralist governments in Buenos Aires that followed the May Revolution, and created instead the Federal League in 1814 among several Argentine Provinces and the Banda Oriental ( modern-day Uruguay ).

Uruguay's early 19th century history was shaped by ongoing fights between the British, Spanish, Portuguese, and other colonial forces for dominance in the Platine region.

Paraguayan wine was exported downstream to Santa Fe and from there to the Platine market.

His father was born into slavery in 1851 in Pittsboro, North Carolina ; after the Civil War, he graduated from St. Augustine's College and became a prominent minister and founder of St. Michael's Episcopal Church.

* March 20 – Ferdinand Foch, French commander of Allied forces in World War I ( b. 1851 )

* Ferdinand Foch ( 1851 – 1929 ), French, Allied Supreme Commander in World War I

The Schleswig-Holstein Question at first culminated in the course of the Revolutions of 1848, when from 1848 to 1851 revolting German-speaking National liberals backed by Prussia fought for the detachement of Schleswig and Holstein from Denmark in the First Schleswig War.

In April 1851, Engels wrote the pamphlet, " Conditions and Prospects of a War of the Holy Alliance against France.

* Ferdinand Foch ( 1851 – 1929 ), Marshal of France, Allied Supreme Commander in the First World War.

The Third Seminole War in 1851 saw the building of a second major American fort in the area, Fort Capron, located in the area that is today's St. Lucie Village.

The population peaked at 287, 075 in 1851, after which it declined gently until the First World War.

In 1851 United States Army post Fort Chadbourne was established to protect the frontier, and the fort was manned until the Civil War.

The county is named for William Trousdale ( 1790 – 1872 ), Brigadier General in the Mexican War, Governor of Tennessee, 1849 – 1851, and U. S. Minister to Brazil, 1853-1857.

Settlement of the county was slowed by events prior to and during the Civil War, but the present day unincorporated community of Thompsonville ( 3 miles northwest of Perry on the Delaware River ) was the first established in 1851 by Mormon settlers who initially refused to accompany the main group led by Brigham Young to the Salt Lake Valley.

Cerro Gordo County was formed in 1851 and named after a battlefield in the Mexican War, where General Winfield Scott defeated the Mexican General Santa Anna on April 18, 1847.

Stewart Cummings was the first postmaster in 1851 and when the village was incorporated in 1872, John S. Cummings, a Civil War veteran became the first mayor.

Daniel Scott Lamont ( February 9, 1851 – July 23, 1905 ) was the United States Secretary of War during Grover Cleveland's second term.

The settlement of Mason grew up around Fort Mason which was established by the United States War Department as a front-line defense against Kiowa, Lipan Apache and Comanche, on July 6, 1851.

Even in 19th century North America, when by the decree of the President of the United States, Brigham Young, the Mormon hierarch and head of The Church of Jesus Christ of Latter-day Saints, was appointed first Governor of the Utah Territory on 28 September 1851, this was called ( politically, not in law ) establishing a semi-theocratic ( theodemocratic ) form of government there ( until the Utah War ) as an imperium in imperio, within the limits of the republic.

He had no schooling until age 14 ; he then studied for three years at Shiloh College, served in the Mexican-American War as a second lieutenant in the 1st Illinois Infantry, studied law in the office of an uncle, graduated from the Law Department of the University of Louisville in 1851, and practiced law with success.

Famous match races include the 1851 match at York between the Epsom Derby winners The Flying Dutchman and Voltigeur ; the 1878 four mile long race in Louisville between the Eastern U. S. colt Ten Broeck and California filly Mollie McCarty that inspired the song Molly and Tenbrooks, the Canadian contest between Man o ' War and Sir Barton in 1920, won by Man O ' War ; Seabiscuit's victory over War Admiral in the 1938 Pimlico Special ; the 1955 race between Nashua and Swaps, the 1966 Pace of the Century between standardbred champs Bret Hanover and Cardigan Bay, and 1975's tragedy-marred contest between colt Foolish Pleasure and filly Ruffian at Belmont Park.

In 1851, he opened a store in Warner, New Hampshire, partnering with Walter Harriman, a future Governor of New Hampshire and Civil War general.

Young Frederick's father found himself in an untenable position after the collapse of Prussian support and defeat of his own government at the end of the First Schleswig War in 1851.

Man o ' War was owned and bred by August Belmont, Jr. ( 1851 – 1924 ), whose father's accomplishments were recognized through the naming of the Belmont Stakes.

James Miller ( April 25, 1776 – July 7, 1851 ) was a member of the United States House of Representatives from New Hampshire, the first Governor of Arkansas Territory, and a Brigadier General in the United States Army during the War of 1812.

Lincoln successfully led his country through its greatest constitutional, military and moral crisis – the American Civil War – preserving the Union while ending slavery, and promoting economic and financial modernization.

On foreign and military policy, Lincoln spoke out against the Mexican – American War, which he attributed to President Polk's desire for " military glory — that attractive rainbow, that rises in showers of blood ".

A decade and a half later, the Polish anthropology student, Bronisław Malinowski ( 1884 – 1942 ), was beginning what he expected to be a brief period of fieldwork in the old model, collecting lists of cultural items, when the outbreak of the First World War stranded him in New Guinea.

The Civil War Day by Day: An Almanac, 1861 – 1865.

* Weigley, Russell F. A Great Civil War: A Military and Political History, 1861 – 1865.

The family factory produced armaments for the Crimean War ( 1853 – 1856 ); but, had difficulty switching back to regular domestic production when the fighting ended and they filed for bankruptcy.

The American Civil War ( 1861 – 1865 ), in the United States often referred to as simply the Civil War and sometimes called the " War Between the States ", was a civil war fought over the secession of the Confederate States.

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.

* 1776 – American Revolutionary War: Ships of the Continental Navy fail in their attempt to capture a Royal Navy dispatch boat.

* 1862 – American Civil War: The Battle of Shiloh begins – in Tennessee, forces under Union General Ulysses S. Grant meet Confederate troops led by General Albert Sidney Johnston.

* 1865 – American Civil War: The Battle of Sayler's Creek – Confederate General Robert E. Lee's Army of Northern Virginia fights its last major battle while in retreat from Richmond, Virginia.

* 1866 – The Grand Army of the Republic, an American patriotic organization composed of Union veterans of the American Civil War, is founded.

* 1917 – World War I: The United States declares war on Germany ( see President Woodrow Wilson's address to Congress ).

* 1941 – World War II: Nazi Germany launches Operation 25 ( the invasion of Kingdom of Yugoslavia ) and Operation Marita ( the invasion of Greece ).

* 1945 – World War II: Sarajevo is liberated from German and Croatian forces by the Yugoslav Partisans.

* 1945 – World War II: the Battle of Slater's Knoll on Bougainville comes to an end.

* 1972 – Vietnam War: Easter Offensive – American forces begin sustained air strikes and naval bombardments.

* 1861 – American Civil War: The war begins with Confederate forces firing on Fort Sumter, in the harbor of Charleston, South Carolina.

* 1862 – American Civil War: The Andrews Raid ( the Great Locomotive Chase ) occurred, starting from Big Shanty, Georgia ( now Kennesaw ).