secession crisis of 1860–1861

Target entity: secession crisis of 1860–1861
Context triple: [Presidency of James Buchanan, majorEvent, secession crisis of 1860–1861]

• A. Missouri secession crisis
  The Missouri secession crisis was a pivotal early–Civil War political and military struggle over whether the border state of Missouri would join the Confederacy or remain in the Union.
• B. Nullification Crisis
  The Nullification Crisis was an early 1830s political confrontation between the U.S. federal government and South Carolina over the state's attempt to nullify federal tariffs, testing the limits of states' rights and federal authority.
• C. Trent Affair
  The Trent Affair was an 1861 diplomatic crisis during the American Civil War in which the U.S. Navy’s seizure of two Confederate envoys from a British mail steamer nearly provoked war between the United States and the United Kingdom.
• D. Bleeding Kansas crisis
  The Bleeding Kansas crisis was a period of violent conflict in the Kansas Territory in the 1850s between pro-slavery and anti-slavery forces, foreshadowing the American Civil War.
• E. Annexation Crisis
  The Annexation Crisis was a 1908–1909 international dispute sparked by Austria-Hungary’s annexation of Bosnia and Herzegovina, heightening tensions among the European great powers before World War I.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: secession crisis of 1860–1861
Target entity description: The secession crisis of 1860–1861 was the period when multiple Southern U.S. states left the Union following Abraham Lincoln’s election, directly precipitating the American Civil War.

• A. Missouri secession crisis
  The Missouri secession crisis was a pivotal early–Civil War political and military struggle over whether the border state of Missouri would join the Confederacy or remain in the Union.
• B. Nullification Crisis
  The Nullification Crisis was an early 1830s political confrontation between the U.S. federal government and South Carolina over the state's attempt to nullify federal tariffs, testing the limits of states' rights and federal authority.
• C. Trent Affair
  The Trent Affair was an 1861 diplomatic crisis during the American Civil War in which the U.S. Navy’s seizure of two Confederate envoys from a British mail steamer nearly provoked war between the United States and the United Kingdom.
• D. Bleeding Kansas crisis
  The Bleeding Kansas crisis was a period of violent conflict in the Kansas Territory in the 1850s between pro-slavery and anti-slavery forces, foreshadowing the American Civil War.
• E. Annexation Crisis
  The Annexation Crisis was a 1908–1909 international dispute sparked by Austria-Hungary’s annexation of Bosnia and Herzegovina, heightening tensions among the European great powers before World War I.
• F. None of above. chosen