- Era: Ancient Rome
  Alternate Event: If Julius Caesar had not been assassinated
  Outcome: Rome becomes an empire under his rule
  Key Figures: Julius Caesar, Mark Antony
  Implications: Extended peace and stability in the Mediterranean
  Cultural Impact: Influence on governance and military strategy
- Era: Industrial Revolution
  Alternate Event: If steam power was never developed
  Outcome: Continued reliance on manual labor and animal power
  Key Figures: James Watt, George Stephenson
  Implications: Slower technological advancements
  Cultural Impact: Different societal structure and urbanization rates
- Era: World War II
  Alternate Event: If Hitler had not invaded the USSR
  Outcome: A prolonged war in Europe with possible Axis victory
  Key Figures: Adolf Hitler, Joseph Stalin
  Implications: Potential Axis dominance in Europe
  Cultural Impact: Shift in global power balance and technology race
- Era: Cold War
  Alternate Event: If the Cuban Missile Crisis escalated
  Outcome: Possible nuclear disaster
  Key Figures: John F. Kennedy, Nikita Khrushchev
  Implications: Global panic and accelerated arms race
  Cultural Impact: Cultural movements focused on peace and disarmament
- Era: Space Race
  Alternate Event: If the Soviet Union had landed on the moon first
  Outcome: Increased global influence of the USSR
  Key Figures: Yuri Gagarin, Neil Armstrong
  Implications: Shift in American and Soviet policies on technology
  Cultural Impact: Impact on global space policies and collaborations
- Era: American Civil War
  Alternate Event: If the Confederacy had seceded successfully
  Outcome: A divided United States
  Key Figures: Abraham Lincoln, Jefferson Davis
  Implications: Long-term implications on civil rights and segregation
  Cultural Impact: Cultural divisions in American identity
- Era: Renaissance
  Alternate Event: If Leonardo da Vinci had completed all his works
  Outcome: Significantly advanced technology and art
  Key Figures: Leonardo da Vinci, Michelangelo
  Implications: Impact on the enlightenment and scientific discovery
  Cultural Impact: Rise of modern art and technology
- Era: French Revolution
  Alternate Event: If Louis XVI had successfully resisted the revolution
  Outcome: Establishment of a constitutional monarchy
  Key Figures: Louis XVI, Maximilien Robespierre
  Implications: Continued monarchy and slow reform
  Cultural Impact: Different paths for democracy and modern governance
- Era: Ancient Egypt
  Alternate Event: If Cleopatra had allied with the Parthians
  Outcome: A different power balance in the Mediterranean
  Key Figures: Cleopatra, Julius Caesar
  Implications: Possible shift in Roman expansion
  Cultural Impact: Cultural blend of Egyptian and Parthian influences
- Era: Medieval Europe
  Alternate Event: If the Black Death hadn't occurred
  Outcome: Different population dynamics and societal structures
  Key Figures: Pope Urban VI, various monarchs
  Implications: Continued feudalism for longer periods
  Cultural Impact: Impact on Renaissance timing and social change