Directory

1755 CE

A year defined by the catastrophic Lisbon earthquake, the publication of Samuel Johnson's Dictionary, and the escalation of armed conflict between Britain and France in North America.

Geopolitics & Diplomacy

  • The Great Lisbon Earthquake struck on November 1, devastating the Portuguese capital and killing tens of thousands of people, profoundly shaking European confidence in the benevolence of nature.
  • The Marquis of Pombal took charge of the disaster response in Lisbon, organizing relief efforts and beginning the systematic reconstruction of the city.
  • Diplomatic relations between Britain and France collapsed as fighting in North America expanded, with both nations recalling ambassadors and preparing for war.
  • The British government authorized General Edward Braddock to lead a major military expedition against French positions in the Ohio Valley.
  • The expulsion of the Acadians began in the summer, as British authorities forcibly deported thousands of French-speaking settlers from Nova Scotia.
  • The Qianlong Emperor continued to expand Qing territorial control in Central Asia, extending Chinese authority into the Dzungar Khanate region.
  • The Mughal emperor Alamgir II ruled in Delhi as a figurehead, with real power exercised by regional strongmen and the growing influence of the Maratha Confederacy.
  • Swedish diplomatic efforts sought to maintain neutrality amid the growing tensions between the major European powers.
  • The Ottoman Empire maintained peaceful relations with its European neighbors during this period, focusing on internal administration.
  • Negotiations between colonial powers and Native American nations continued, with Indigenous leaders seeking to leverage European rivalries to protect their interests.

Conflict & Security

  • General Braddock's expedition against Fort Duquesne ended in disaster in July, when French and Native American forces ambushed and defeated his column near the Monongahela River.
  • Braddock was mortally wounded in the battle, and George Washington helped lead the remnants of the force to safety, earning recognition for his courage under fire.
  • The British captured Fort Beausejour in Nova Scotia in June, securing their control over the isthmus connecting Nova Scotia to the mainland.
  • The Royal Navy intercepted French troop transports and supply ships in the Atlantic, capturing several vessels and escalating the undeclared naval war.
  • The Battle of Lake George in September saw British colonial forces under William Johnson defeat a French column, bolstering British morale on the northern frontier.
  • The forced removal of the Acadian population involved the destruction of homes, farms, and communities, scattering families across the Atlantic world.
  • French and Native American raiding parties attacked British frontier settlements in Pennsylvania and Virginia, causing panic among colonists.
  • The Maratha Confederacy under Raghunath Rao campaigned in northern India, challenging Afghan and Mughal forces for control of the Punjab.
  • The fortification of key positions along the frontier between French and British North America accelerated, as both sides prepared for a wider conflict.
  • Corsican resistance fighters continued their struggle against Genoese authority, maintaining control of the island's mountainous interior.

Economy & Finance

  • The Lisbon earthquake destroyed the commercial heart of one of Europe's major trading cities, disrupting Portuguese trade with Brazil and the East.
  • Insurance markets in London were heavily affected by claims arising from the Lisbon earthquake, prompting reassessment of risk in the maritime insurance industry.
  • The costs of military operations in North America strained British and French government finances, increasing public debt on both sides.
  • The plantation economy of Jamaica continued to prosper, with sugar exports generating enormous wealth for British planters and merchants.
  • The Pennsylvania ironworks produced increasing quantities of pig iron and bar iron, contributing to the colony's economic diversification.
  • French merchants in the fur trade maintained their networks in the interior of North America, though wartime disruptions affected supply lines.
  • The price of grain in France fluctuated with harvest conditions, with poor harvests leading to bread shortages and social unrest in some regions.
  • Colonial merchants in Boston, New York, and Philadelphia profited from wartime contracts supplying British military forces.
  • The growing demand for military supplies including uniforms, weapons, and provisions stimulated manufacturing in Britain.
  • Gold and diamond mining in Portuguese Brazil continued to generate significant revenues for the crown, though output from some mines was declining.

Technology & Infrastructure

  • The destruction of Lisbon prompted innovative approaches to urban planning and earthquake-resistant construction in the rebuilt city.
  • Pombal's plan for rebuilding Lisbon incorporated a grid street pattern and structural innovations designed to withstand future earthquakes.
  • Military road construction in the American colonies facilitated the movement of troops and supplies toward frontier fortifications.
  • The Newcomen steam engine continued to be deployed at coal and tin mines in England, pumping water from flooded shafts.
  • Advances in gunpowder manufacture improved the quality and consistency of military explosives used in European armies.
  • Canal construction projects in France progressed, connecting major rivers and facilitating the transportation of goods across the country.
  • The development of chronometers for maritime navigation advanced, with clockmakers seeking to build timepieces accurate enough to determine longitude at sea.
  • Military fortification design evolved to incorporate the latest defensive principles, with star-shaped bastions and earthwork defenses.
  • Improvements in paper manufacturing increased the availability and reduced the cost of paper for printing, writing, and commerce.
  • Surveying instruments became more refined, enabling more accurate mapping of colonial territories and frontier regions.

Science & Discovery

  • The Lisbon earthquake sparked intense scientific and philosophical debate about the nature of earthquakes and the physical forces shaping the Earth.
  • Immanuel Kant published three essays on the causes of earthquakes, proposing that underground caverns filled with hot gases were responsible.
  • Joseph Black presented his findings on magnesia alba and fixed air to the University of Edinburgh, identifying carbon dioxide as a distinct substance.
  • The continued publication of the Encyclopedie brought scientific knowledge to a broader European audience, despite opposition from religious authorities.
  • Astronomical observations of comet appearances contributed to the study of celestial mechanics and orbital theory.
  • The study of fossils in European rock formations continued to challenge prevailing ideas about the age and history of the Earth.
  • Naturalists accompanying military and trading expeditions collected specimens from newly explored regions of North America and the tropics.
  • Mathematical work by Daniel Bernoulli and others advanced the understanding of fluid dynamics and the behavior of gases.
  • The Lisbon earthquake stimulated interest in seismology, with observers across Europe recording the effects of the tremor and its aftershocks.
  • Botanical gardens and natural history cabinets in European capitals continued to expand their collections, serving as centers for scientific study.

Health & Medicine

  • The Lisbon earthquake and its aftermath caused widespread injuries and disease among survivors, overwhelming the city's medical resources.
  • Epidemic diseases including typhus and cholera-like illnesses spread through the displaced populations of Lisbon in the weeks following the earthquake.
  • Military campaigns in North America exposed soldiers to malaria, dysentery, and other diseases endemic to frontier environments.
  • The practice of variolation against smallpox continued to spread in the American colonies, with Cotton Mather's earlier advocacy influencing adoption.
  • Surgical techniques for amputation improved among military surgeons, who gained extensive experience treating battlefield injuries.
  • The London College of Physicians continued to regulate medical practice, though unlicensed practitioners served many communities.
  • Yellow fever outbreaks in Caribbean port cities caused high mortality among European sailors and soldiers.
  • Traditional healing practices among Native American peoples incorporated knowledge of medicinal plants that remained unknown to European physicians.
  • The health of enslaved people on Caribbean sugar plantations suffered from brutal working conditions, inadequate nutrition, and tropical diseases.
  • Public sanitation in European cities remained poor, with open sewers, contaminated wells, and accumulated waste creating conditions favorable to epidemic disease.

Climate & Environment

  • Atmospheric carbon dioxide concentration was approximately 278 parts per million, as later confirmed by ice core analysis.
  • The Lisbon earthquake generated a massive tsunami that struck coastlines across the Atlantic, causing destruction in Morocco, southwestern Spain, and as far away as the Caribbean.
  • Fires following the Lisbon earthquake burned for days, destroying churches, palaces, libraries, and thousands of homes across the city.
  • Severe weather events across the North Atlantic disrupted shipping and affected harvests in coastal communities.
  • Deforestation in the eastern American colonies continued to accelerate as land was cleared for farms, towns, and military operations.
  • The eruption of Katla volcano in Iceland in October produced flooding and ashfall that damaged agricultural land on the island.
  • Whaling expeditions from New England and European ports expanded into new hunting grounds, reducing whale populations in the North Atlantic.
  • Soil degradation in the tobacco-growing regions of Virginia and Maryland continued, as planters exhausted the land and moved to fresh acreage.
  • The expansion of rice cultivation in the Carolina Lowcountry involved the damming and flooding of coastal wetlands, transforming natural ecosystems.
  • Forest fires in North America, both natural and set by Indigenous peoples for land management, shaped the landscape of the interior.

Culture & Society

  • Samuel Johnson published A Dictionary of the English Language in April, a monumental work of scholarship that standardized English spelling and definitions.
  • The Lisbon earthquake prompted theological debate across Europe, with some seeing it as divine punishment and others questioning the concept of a benevolent providence.
  • Voltaire used the Lisbon disaster as a central theme in his philosophical writings, challenging the optimistic philosophy that this was the best of all possible worlds.
  • The Moscow State University was founded by Mikhail Lomonosov and Ivan Shuvalov, establishing Russia's first university.
  • The expulsion of the Acadians created a diaspora that would eventually contribute to the founding of Cajun culture in Louisiana.
  • Portrait painting flourished in colonial America, with artists like John Singleton Copley beginning to establish their reputations.
  • The social stratification of European society remained rigid, with aristocratic privilege, guild monopolies, and serfdom defining the lives of millions.
  • Religious orders continued to operate schools, hospitals, and charitable institutions across Catholic Europe and in colonial territories.
  • The consumption of tea became an established social ritual in Britain, driving imports from China and shaping domestic customs.
  • The world population was approximately 805 million.