Directory

1638 CE

A year defined by the brutal suppression of the Shimabara Rebellion in Japan, the publication of Galileo's final masterwork, the Swedish victory at Rheinfelden, and the Ottoman Empire's reconquest of Baghdad.

Geopolitics & Diplomacy

  • The Tokugawa shogunate crushed the Shimabara Rebellion by April, massacring an estimated 37,000 rebels and effectively ending organized Christianity in Japan for over two centuries.
  • The Ottoman Empire under Sultan Murad IV personally led the reconquest of Baghdad from the Safavid Persians in December, restoring Ottoman control over Mesopotamia.
  • Emperor Ferdinand III continued efforts to negotiate an end to the Thirty Years' War while maintaining military operations against France and Sweden.
  • Cardinal Richelieu maintained France's anti-Habsburg alliance system, coordinating military strategy with Sweden and the Dutch Republic.
  • The Dutch Republic strengthened its colonial administration in Brazil, with Johan Maurits of Nassau-Siegen serving as governor and pursuing an ambitious program of development.
  • English colonial expansion continued with the founding of New Haven Colony in Connecticut by Puritans seeking stricter religious governance.
  • The Mughal Empire under Shah Jahan maintained its vast territorial holdings, with the Taj Mahal's construction continuing as one of the great building projects of the age.
  • Scottish resistance to King Charles I's religious policies intensified, with the National Covenant signed in February rejecting the king's attempts to impose Anglican practices.
  • The Tokugawa shogunate expelled the Portuguese from Japan following the Shimabara Rebellion, confining European trade to the Dutch at Dejima island in Nagasaki harbor.
  • Swedish diplomacy under Chancellor Oxenstierna maintained alliances with France and various German Protestant states against the Habsburg Emperor.

Conflict & Security

  • The Shimabara Rebellion ended in April when Tokugawa forces, numbering over 125,000, overwhelmed the besieged rebels at Hara Castle, killing virtually all the defenders.
  • Sultan Murad IV personally led the Ottoman siege of Baghdad, which fell to Ottoman forces in December after a prolonged and bloody campaign against the Safavid garrison.
  • Swedish forces under Bernhard of Saxe-Weimar won the Battle of Rheinfelden in February-March, capturing the strategic Rhine crossing and four Imperial generals.
  • Bernhard of Saxe-Weimar captured the fortress of Breisach on the Rhine in December, giving Sweden and France control of a vital strategic position in southern Germany.
  • French forces engaged Spanish and Imperial armies across multiple fronts, including the Rhineland, northern Italy, and the Pyrenean border.
  • Chinese rebel forces continued their devastating campaigns through the interior provinces, with the Ming government unable to suppress the growing insurgency.
  • The Joseon dynasty of Korea, having submitted to Manchu authority following the 1636-1637 invasion, reluctantly provided tribute and military support to the Qing war effort against the Ming.
  • Dutch naval forces operated against Spanish shipping in the Atlantic and Caribbean, maintaining economic pressure on the Spanish Empire.
  • The Bishops' Wars loomed as Scottish Covenanters organized military resistance to Charles I's religious policies, threatening armed conflict between Scotland and England.
  • Barbary corsairs continued to raid European coastal communities and shipping, with the slave trade in North African ports remaining active.

Economy & Finance

  • The Dutch colonial administration under Johan Maurits invested in infrastructure, agriculture, and cultural development in Dutch Brazil, attempting to create a viable colony.
  • French taxation increased to fund the war effort, with new imposts and levies provoking localized peasant uprisings in several provinces.
  • The English Ship Money tax levied by Charles I generated revenue for naval construction but provoked growing opposition as an unconstitutional levy.
  • The Dutch East India Company continued its profitable monopoly on the spice trade, with operations extending from the Cape of Good Hope to Japan.
  • Spanish finances remained in chronic crisis, with the crown dependent on foreign bankers and American silver to fund its military commitments.
  • Tobacco exports from Virginia continued to grow, establishing the colony's economic foundation despite fluctuating prices in European markets.
  • The transatlantic slave trade expanded further, with Dutch, Portuguese, and English traders transporting growing numbers of enslaved Africans to the Americas.
  • Swedish revenues from Baltic trade and German war contributions sustained the kingdom's military operations on the continent.
  • The fur trade in New France extended deeper into the Great Lakes region, with French traders and missionaries establishing new outposts.
  • The Ottoman reconquest of Baghdad disrupted trade routes between Persia and the Mediterranean, affecting commerce in luxury goods and raw materials.

Technology & Infrastructure

  • The fortress of Breisach on the Rhine, one of the strongest positions in southern Germany, fell to Bernhard of Saxe-Weimar after an extended siege demonstrating advanced siege engineering.
  • Dutch colonial infrastructure in Brazil expanded under Johan Maurits, including bridges, roads, and port facilities in Recife.
  • The English warship fleet grew under Charles I's Ship Money program, with new vessels embodying advances in naval architecture and armament.
  • Construction of the Taj Mahal complex continued in Agra, with the main dome and minarets nearing completion.
  • Printing technology continued to enable the dissemination of scientific works, including Galileo's final publication smuggled out of Italy.
  • Fortification design continued to evolve, with military engineers incorporating lessons from the ongoing sieges of the Thirty Years' War.
  • Windmill-powered industry in the Dutch Republic expanded, with mills used for timber sawing, oil pressing, paper making, and grain processing.
  • Iron and steel production in Sweden supplied both domestic military needs and a growing export market in bar iron.
  • Canal navigation in the Dutch Republic and France continued to improve, facilitating internal trade and military logistics.
  • Astronomical instruments became more precise as craftsmen refined the manufacture of telescopes, quadrants, and other observational tools.

Science & Discovery

  • Galileo Galilei's Discourses and Mathematical Demonstrations Relating to Two New Sciences was published in Leiden, smuggled out of Italy to circumvent the Inquisition's ban on his works.
  • Galileo's Discourses established foundational principles of kinematics and the strength of materials, making it one of the most important scientific texts of the century.
  • Dutch exploration of the Australian coastline continued, with new charting expeditions adding to European knowledge of the continent's western and northern shores.
  • Jesuit missionaries and scientists continued their work in China, sharing European astronomical knowledge while studying Chinese scientific and philosophical traditions.
  • Botanical gardens across Europe expanded their collections, with the Jardin des Plantes in Paris and gardens in Leiden and Oxford cultivating specimens from around the world.
  • René Descartes continued his philosophical and scientific investigations in the Dutch Republic, working on problems in optics, meteorology, and mathematics.
  • The study of magnetism and compass variation progressed, with navigators and natural philosophers recording observations of magnetic declination across different locations.
  • Mathematical advances continued through the work of Fermat, Descartes, and other scholars, developing new methods in geometry, algebra, and number theory.
  • Natural history studies expanded as European explorers, missionaries, and colonists documented the flora and fauna of newly encountered regions.
  • Alchemical and early chemical investigations continued in European universities and courts, with practitioners studying distillation, metallurgy, and pharmaceutical preparation.

Health & Medicine

  • The mass casualties of the Shimabara Rebellion reflected the devastating scale of violence in early modern warfare, with an estimated 37,000 rebels killed.
  • Plague continued to threaten European cities, with quarantine procedures and public health measures maintained in major ports and commercial centers.
  • Disease accompanied military campaigns throughout the Thirty Years' War, with typhus, dysentery, and other infections claiming more lives than battle.
  • The medical uses of cinchona bark continued to spread through European medical practice, particularly for the treatment of intermittent fevers.
  • Anatomical studies at European universities advanced knowledge of the human body, with the University of Leiden remaining a leading center of medical education.
  • Traditional medicine systems in China, India, and the Islamic world continued to serve vast populations with herbal remedies and established therapeutic practices.
  • Smallpox epidemics continued to devastate indigenous populations in the Americas, contributing to ongoing demographic catastrophe in affected regions.
  • Surgical practice continued to advance through wartime experience, though post-operative infection remained a major cause of mortality.
  • Apothecaries in European cities prepared and dispensed medicines, serving as the primary interface between medical knowledge and the general public.
  • Infant and child mortality remained extremely high across all societies, with infectious diseases and malnutrition the primary causes of death in young children.

Climate & Environment

  • The Little Ice Age continued to affect global climate, with cooler temperatures and variable weather patterns reducing agricultural yields in many regions.
  • Deforestation in Japan prompted the Tokugawa shogunate to implement forest conservation measures, reflecting early recognition of the need for sustainable timber management.
  • Atmospheric carbon dioxide concentration was approximately 274 parts per million, as later confirmed by ice core analysis.
  • Dutch polder reclamation continued to transform the landscape, with new agricultural land created from drained lakes and marshlands.
  • Colonial settlement in New England continued to alter local environments, with forest clearing and European farming practices changing land use patterns.
  • Drought and climate variability in China contributed to continued crop failures, fueling the peasant rebellions that threatened the Ming dynasty.
  • Whale populations in Arctic waters continued to decline as European hunting fleets intensified their operations around Spitsbergen.
  • The introduction of European plants and animals to the Americas continued to transform local ecosystems, with some invasive species displacing native ones.
  • Flooding along major rivers in Europe and Asia caused periodic destruction of crops and infrastructure in low-lying areas.
  • Timber resources in parts of England and France became increasingly scarce, driving governmental efforts to regulate forest harvesting and promote replanting.

Culture & Society

  • The suppression of the Shimabara Rebellion effectively extinguished open Christianity in Japan, driving surviving believers underground as 'hidden Christians' for over two centuries.
  • Galileo's publication of the Discourses, despite his condemnation, demonstrated the resilience of scientific inquiry in the face of institutional opposition.
  • The Scottish National Covenant was signed by thousands of Scots in February, affirming Presbyterian principles and rejecting royal interference in church governance.
  • Anne Hutchinson was tried and banished from Massachusetts Bay Colony for her heterodox religious views, highlighting the limits of Puritan tolerance.
  • Dutch Golden Age culture continued to produce masterworks in painting, with Rembrandt, Hals, and other artists reflecting the Republic's prosperity and civic values.
  • Mughal court culture under Shah Jahan continued to patronize architecture, painting, music, and literature, creating an era of extraordinary artistic achievement.
  • The transatlantic slave trade continued to transport thousands of Africans to the Americas annually, with enslaved people creating new cultural forms under brutal conditions.
  • Baroque music in Italy and Germany continued to evolve, with composers developing new forms of opera, sacred music, and instrumental composition.
  • The University of Helsinki (then the Royal Academy of Turku) was founded in Swedish Finland, extending access to higher education in the Swedish realm.
  • The world population was approximately 561 million, resuming growth as the worst demographic effects of the Thirty Years' War began to moderate in some regions.