(A) American War
(B) ** Civil War
(C) World War II
(D) Cold War
EXPLANATIONS BELOW
Concept note-1: -The American Civil War was fought from 1861 to 1865 between the northern states loyal to the Union and the 7 southern states that had seceded from the Union to form the Confederate States of America.
Concept note-2: -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.
Concept note-3: -American Civil War, also called War Between the States, four-year war (1861–65) between the United States and 11 Southern states that seceded from the Union and formed the Confederate States of America.
Concept note-4: -To Southerners, the conflict was often called the “War of Secession” or even the high-minded sounding “War for Southern Independence.” Other Confederates called it the “War of Northern Aggression”-a name that persists within some quarters to this very day.
Concept note-5: -The use civil in civil war is not related to the definition “quiet or peaceable behavior.” Instead it refers to an older meaning “of or relating to citizens, ” and thus civil war is between citizens of the same country. The term entered the lexicon in the early 16th century.