Not sure what you mean by the 'major crisis events'.
The major event of that year was the Compromise of 1850, whose main provisions were the admission of California as free soil and (in return for this concession by the South) the Fugitive Slave Act, which allowed for the employment of official slave-catchers.
The first one signalled that the South would now find it harder to bring in any new slave states. The second backfired badly, causing Harriet Beecher Stowe to write 'Uncle Tom's Cabin'.
Both of these raised the temperature of the debate and brought war nearer.
The election of Lincoln as president.
Several events contributed to the outbreak of the Civil War. Many people consider the 1861 battle of Fort Sumter to be the direct trigger.
Many significant events occurred in 1865,possibly the MOST significant being the surrender of Gen. Robert E Lee's Army of Northern Virginia in April 1865.
Fort Sumter started the American Civil War.
The Civil War, a devastating and tragic event in United States' history, can never be forgotten.
The election of Lincoln as president.
Well, there were multiple events, but one of the most significant events that caused the succession was the election of Abraham Lincoln (1860), but the war didn't actually begin until the Confederacy bombarded Fort Sumter.
The secession of South Carolina from the Union
There are many events that are important to chains. The main event if chain is the Civil War.
The election of Abraham Lincoln in November 1860.
Midlife crisis is a psychological event. The unconscious mind creates something which will cause the individual to psychologically implode. The event or events are not always serious, but are tailor made so the person will react in the fashion the unconscious wants.
an event that lead up to the civil right
the two major events during his presidency were the Cuban Missile Crisis and the Bay of Pigs Invasion. He was also president during the building of the Berlin Wall, the Space Race, the Civil Rights Movement, and the Vietnam War.
Antietam appomattox courthouse- where the confederate states surrendered to the union. that was an important event.
Cricket and curling are sporting events. The Civil War is an event in American history.
Several events contributed to the outbreak of the Civil War. Many people consider the 1861 battle of Fort Sumter to be the direct trigger.
the nullification crisis