Answer:
The correct answer is D, the creation of the Confederate States of America.
Explanation:
The timeline lists the events that led to the beginning of the Civil War in 1861. It all started with the Kansas-Nebraska Act, enacted in 1854, that gave rise to the Bleeding Kansas events in which abolitionist and pro-slavery forces faced each other to determine whether Kansas would become a free or slave state.
Then, in 1859, John Brown's raid at Harpers Ferry aimed at unleashing a slave revolt in Virginia, but it was put down and Brown was executed, although it set a huge antecedent for many abolitionists.
In 1860, the election of Abraham Lincoln as president, who was considered as an abolitionist by many southerners, finally cut the rope and led to many southern states seceding from the Union to protect slavery in their territories. These states joined in 1861, forming the Confederate States of America. A few months later, the Civil War started as a result of all these events.
