Past events still shaping today.

The rest of the ladder

1. 532

   

   Battles of Lexington and Concord 1775

   score 16

   Lexington and Concord transformed colonial resistance from political protest into armed conflict, forcing wavering colonists to choose sides and convincing many moderates that independence was now inevitable.

2. 533

   

   Kyoto Protocol Adopted 1997

   score 16

   The Kyoto Protocol established that climate change was a political problem, not just a scientific one.

3. 534

   

   Invention of the Radio 1895

   score 16

   Marconi's 1895 demonstration proved wireless signal transmission was viable at practical distances, overcoming skepticism that had persisted despite decades of electromagnetic theory.

4. 535

   

   Viking 1 Lands on Mars 1976

   score 16

   Viking 1 established the template for robotic Mars exploration and delivered the first direct chemical and biological analysis of another planet's surface.

5. 536

   

   Dayton Accords Agreement Signed 1995

   score 16

   The Dayton Accords halted the bloodiest conflict in Europe since World War II and set a template for international peace negotiations in the post-Cold War era.

6. 537

   

   Newton's Laws Published 1687

   score 16

   Newton's three laws—inertia, force-acceleration, and action-reaction—unified terrestrial and celestial mechanics under a single mathematical framework.

7. 538

   

   Falkland Islands War 1982

   score 16

   Sits upstream of multiple events in this archive; the present still inherits its choices.

8. 539

   

   Assembly of the League of Nations 1920

   score 16

   The League of Nations Assembly invented the template for modern international governance—the idea that sovereign states could cede some autonomy to a permanent forum for dispute resolution.

9. 540

   

   Treaty of Kanagawa 1854

   score 16

   The treaty shattered Japan's sakoku (closed country) policy and triggered a cascade of modernization that would reshape East Asia within decades.

10. 541

    

    Darwin's Beagle Voyage & Origins Theory 1859

    score 16

    Darwin's theory of evolution by natural selection became the unifying framework for modern biology, replacing teleological explanations with mechanism.

11. 542

    

    Franklin D. Roosevelt Elected President 1932

    score 16

    Sits upstream of multiple events in this archive; the present still inherits its choices.

12. 543

    

    Mahatma Gandhi Assassinated 1948

    score 16

    Sits upstream of multiple events in this archive; the present still inherits its choices.

13. 544

    

    Mexican Revolution's Institutional Phase 1920

    score 16

    Sits upstream of multiple events in this archive; the present still inherits its choices.

14. 545

    

    Bay of Pigs Invasion 1961

    score 16

    Sits upstream of multiple events in this archive; the present still inherits its choices.

15. 546

    

    Lunar Module Soft Landing 1966

    score 16

    Sits upstream of multiple events in this archive; the present still inherits its choices.

16. 547

    

    Aum Shinrikyo Tokyo Subway Attack 1995

    score 16

    Sits upstream of multiple events in this archive; the present still inherits its choices.

17. 548

    

    NATO Bombing of Yugoslavia 1999

    score 16

    Sits upstream of multiple events in this archive; the present still inherits its choices.

18. 549

    

    Australian Federation Established 1901

    score 16

    On 1 January 1901, six separate British colonies unified into the Commonwealth of Australia, creating a new nation and establishing a federal system that remains the template for Australian governance today.

    • set offFirst Intifada: Palestinian Uprising Begins1987
19. 550

    Opium War Begins with British Invasion 1839

    score 16

    The First Opium War established Britain's military superiority in Asia and forced China to cede Hong Kong and open five treaty ports to foreign trade.

20. 551

    

    2010 FIFA World Cup South Africa 2010

    score 16

    The 2010 World Cup legitimized Africa as a host for global sporting events and injected billions into South Africa's economy, though questions remain about long-term benefit distribution and stadium usage after the tournament ended.

21. 552

    

    Liz Truss Becomes UK Prime Minister 2022

    score 16

    Truss's brief premiership exposed the instability of Britain's parliamentary system and the limits of radical fiscal policy during an energy crisis.

22. 553

    

    Haitian Revolution Declares Independence 1804

    score 16

    Haiti's 1804 independence shattered the myth of inevitable European dominance and demonstrated that enslaved people could overthrow colonial powers through sustained resistance.

23. 554

    

    Opening of the Suez Canal 1869

    score 16

    The canal's opening accelerated industrialization and global commerce by making Asian and African markets dramatically more accessible to European powers.

24. 555

    

    British General Election 1832

    score 16

    This election validated the Great Reform Act of 1832, the first major expansion of the British franchise since the 17th century.