(A) ** April 12, 1861
(B) May 17, 1859
(C) August 2, 1860
(D) July 4, 1862
EXPLANATIONS BELOW
Concept note-1: -At 4:30 a.m. on April 12, 1861, Confederate troops fired on Fort Sumter in South Carolina’s Charleston Harbor. Less than 34 hours later, Union forces surrendered. Traditionally, this event has been used to mark the beginning of the Civil War.
Concept note-2: -The American Civil War was fought between the United States of America and the Confederate States of America, a collection of eleven southern states that left the Union in 1860 and 1861. The conflict began primarily as a result of the long-standing disagreement over the institution of slavery.
Concept note-3: -The Civil War in the United States began in 1861, after decades of simmering tensions between northern and southern states over slavery, states’ rights and westward expansion.