1864 CE
A year defined by General Sherman's devastating March to the Sea, the signing of the first Geneva Convention, the installation of Maximilian as Emperor of Mexico, and the founding of the International Workingmen's Association.
Geopolitics & Diplomacy
- Archduke Maximilian of Austria was installed as Emperor of Mexico on April 10, backed by French military force and conservative Mexican factions.
- The First Geneva Convention was signed on August 22 by twelve nations, establishing international rules for the humane treatment of wounded soldiers and the protection of medical personnel in wartime.
- The International Workingmen's Association, later known as the First International, was founded in London on September 28, uniting socialist and labor movements across Europe.
- The Danish-Prussian War erupted in February as Prussia and Austria invaded Denmark over the Schleswig-Holstein question.
- The Treaty of Vienna on October 30 ended the Danish-Prussian War, forcing Denmark to cede the duchies of Schleswig, Holstein, and Lauenburg to Prussia and Austria.
- Abraham Lincoln won reelection as president on November 8, defeating Democratic candidate George McClellan on a platform of continuing the war until Union victory.
- Russia continued its suppression of the Polish uprising, executing and deporting rebels while implementing policies to Russify Polish territories.
- The Taiping Rebellion in China neared its end as Qing imperial forces, supported by European-led armies, closed in on the rebel capital of Nanjing.
- Confederate diplomatic efforts to gain European recognition continued to fail as Union military victories undermined Southern credibility abroad.
- The Convention of Gastein in 1865 would later divide administration of the conquered Danish duchies between Prussia and Austria, but tensions over the arrangement were already building.
Conflict & Security
- General William Tecumseh Sherman launched his March to the Sea in November, leading 60,000 Union troops from Atlanta to Savannah while destroying Confederate infrastructure.
- The Battle of the Wilderness in May began General Grant's Overland Campaign, a relentless series of engagements against Lee's army in Virginia.
- The Battle of Spotsylvania Court House raged for nearly two weeks in May, with some of the most intense fighting of the entire Civil War.
- The Battle of Cold Harbor on June 3 resulted in devastating Union casualties as frontal assaults against entrenched Confederate positions failed.
- The Siege of Petersburg began in June as Grant's forces surrounded the critical railroad junction south of Richmond, beginning a nine-month siege.
- The Battle of Mobile Bay on August 5 ended in a Union naval victory as Admiral David Farragut famously ordered his fleet past Confederate mines and fortifications.
- Confederate General Jubal Early's raid on Washington in July brought the war to the outskirts of the Union capital before being repelled.
- The Sand Creek Massacre on November 29 saw Colorado militia attack a peaceful Cheyenne and Arapaho encampment, killing an estimated 150 to 200 Native Americans, mostly women and children.
- The Battle of Franklin on November 30 in Tennessee resulted in catastrophic Confederate casualties, with six generals killed in frontal assaults.
- The Taiping Heavenly Kingdom fell in July when Qing forces captured Nanjing, ending the Taiping Rebellion that had claimed millions of lives over fourteen years.
Economy & Finance
- Sherman's March to the Sea destroyed railroads, factories, and agricultural resources across Georgia, devastating the Southern economy.
- The National Banking Act was strengthened with additional legislation, expanding the system of federally chartered banks in the United States.
- The Confederate economy collapsed further as hyperinflation rendered its currency nearly worthless and essential goods became scarce.
- The In God We Trust motto first appeared on United States coins, added to the newly minted two-cent piece.
- Cotton speculation in Liverpool reached extraordinary levels as traders bet on the future supply from the war-torn American South.
- Gold mining in Montana Territory attracted thousands of prospectors, with strikes at Alder Gulch and Last Chance Gulch boosting territorial development.
- The Union Pacific Railroad progressed westward across Nebraska, employing thousands of workers and consuming vast quantities of materials.
- British investment in Indian railways expanded, with new lines connecting agricultural regions to port cities for export trade.
- The Danish-Prussian War disrupted trade in the Baltic Sea region, affecting commercial shipping routes.
- The International Workingmen's Association sought to unite workers across national boundaries, advocating for labor rights and economic justice.
Technology & Infrastructure
- George Pullman built his first luxury sleeping car, the Pioneer, which would transform long-distance rail travel in the United States.
- The Union Army's Military Railroad system operated over 2,000 miles of track, demonstrating the strategic importance of railroads in modern warfare.
- Confederate torpedoes, early naval mines, sank or damaged numerous Union vessels in harbors and rivers, pioneering mine warfare.
- The CSS Hunley became the first combat submarine to sink an enemy warship when it attacked the USS Housatonic in Charleston Harbor on February 17.
- The Bessemer process for steelmaking spread to the United States, with the first Bessemer steel produced at an experimental facility.
- The construction of the Mont Cenis Tunnel through the Alps between France and Italy continued, using newly developed pneumatic drills.
- Military telegraph communications reached new levels of sophistication, with encrypted messages transmitted rapidly across battle zones.
- Railroad destruction and rapid reconstruction became a defining feature of Civil War strategy, with both sides targeting enemy rail infrastructure.
- The development of breech-loading rifles accelerated, with Prussian forces demonstrating the superiority of the needle gun in the Danish war.
- The use of aerial observation from tethered balloons continued in the Civil War, though the Union Balloon Corps had been disbanded the previous year.
Science & Discovery
- James Clerk Maxwell published A Dynamical Theory of the Electromagnetic Field, unifying electricity, magnetism, and light into a single theoretical framework.
- Louis Pasteur developed pasteurization, a process of heating liquids to kill harmful bacteria, initially applied to wine preservation in France.
- The element gallium was predicted by Mendeleev's later periodic table, but in 1864, spectroscopy continued to identify new elements in mineral specimens.
- John Newlands proposed the Law of Octaves, an early attempt to organize chemical elements by atomic weight that foreshadowed the periodic table.
- The Geological Survey of India expanded its mapping of the subcontinent's mineral resources and geological formations.
- Samuel White Baker and Florence von Sass explored the headwaters of the Nile, reaching Lake Albert in central Africa.
- Wilhelm His Sr. advanced the field of embryology with detailed anatomical studies of human fetal development.
- The study of fossils in the American West expanded scientific understanding of prehistoric life, including early mammals and dinosaurs.
- Georg Cantor began his mathematical studies in Berlin, laying groundwork for his later revolutionary work on set theory and infinite numbers.
- The Royal Geographical Society sponsored expeditions to map and explore regions of central Africa, the Arctic, and Central Asia.
Health & Medicine
- The Geneva Convention established protections for wounded soldiers and medical personnel, creating the framework for international humanitarian law.
- Jean-Antoine Villemin demonstrated that tuberculosis could be transmitted from infected humans and cattle to rabbits, providing strong evidence that the disease was contagious.
- Civil War surgeons continued to develop improved surgical techniques, including the use of the Minie ball extraction tool and advances in wound debridement.
- The United States Sanitary Commission organized sanitary fairs across the North, raising millions of dollars for medical supplies and soldier relief.
- Smallpox vaccination campaigns were carried out in both Union and Confederate armies, though vaccine supplies were often insufficient.
- The development of artificial limbs improved significantly, driven by demand from the thousands of Civil War amputees.
- Joseph Lister had not yet published his antiseptic principles, and surgical infections remained a leading cause of post-operative death.
- Yellow fever outbreaks affected communities along the Gulf Coast and in Caribbean ports, with transmission mechanisms still poorly understood.
- The British Medical Association continued to advocate for public health reforms, including clean water provision and improved sanitation in cities.
- Opium and morphine were widely used as painkillers for wounded soldiers, contributing to widespread addiction among Civil War veterans.
Climate & Environment
- Atmospheric carbon dioxide concentration was approximately 287 parts per million, as later confirmed by ice core analysis.
- Sherman's March to the Sea left a swath of environmental destruction across Georgia, with forests burned, crops destroyed, and livestock slaughtered.
- The Calcutta Cyclone of October 5 struck the city with devastating force, killing an estimated 60,000 people and destroying much of the port.
- Coal consumption continued to increase in industrial nations, with growing demand for fuel in factories, railways, and steamships.
- The American bison population on the Great Plains faced increasing pressure from commercial hunting and habitat loss due to railroad construction.
- Deforestation in the upper Great Lakes region accelerated as lumber companies expanded their operations in Michigan, Wisconsin, and Minnesota.
- The introduction of non-native species continued to disrupt ecosystems in Australia, New Zealand, and the Pacific Islands.
- Urban rivers in industrial cities remained heavily polluted, with the Thames, Rhine, and Merrimack carrying industrial waste and untreated sewage.
- The guano trade continued to deplete seabird nesting colonies on islands off the coast of Peru, as the fertilizer remained in high demand.
- Severe weather disrupted agricultural production in parts of northern Europe, contributing to localized food shortages.
Culture & Society
- The world population was approximately 1.357 billion.
- Leo Tolstoy continued writing War and Peace, which was published in serial form beginning in 1865.
- Jules Verne published Journey to the Center of the Earth, a pioneering science fiction adventure novel.
- The Cheyenne and Arapaho people faced devastating violence at Sand Creek, an event that provoked outrage even among some contemporaries.
- The Thirteenth Amendment abolishing slavery was passed by the United States Senate in April but stalled in the House of Representatives.
- African American soldiers served with distinction in the Union Army, with nearly 180,000 Black men eventually serving in the armed forces.
- The Salvation Army's precursor, the East London Christian Mission, was not yet founded, but evangelical movements expanded in British cities.
- Baseball continued to grow in popularity in the northern United States, with clubs forming in cities across the region.
- Photography continued to document the Civil War, with images of battlefield dead and camp life bringing the realities of war to the public.
- The concept of a Red Cross symbol for medical neutrality was established alongside the Geneva Convention, adopting the Swiss flag in reverse colors.