The people from/in the North can be referred to as Northerners or more often, Unionists. The Southerners, however, preferred to call them Yankees.
The South seceded from the United States.
The Confederacy
The Union was the North - all the states that had not seceded.
On Apr.20,1861, North Carolina seceded from the Union.
It didn't. North and South Korea both declared independence in 1948. Neither country seceded from the other, but the country was divided into two distinct occupation zones by the US and Soviets in 1945.
South Dakota is a state in America's Midwest region. The demonym used to describe the 800 000 residents is 'South Dakotan'. Thus, a person from South Dakota should be referred to as a South Dakotan.
The south seceded from the United States. The south formed the Confederacy, while the north was generally known as the Union.
Arkansas, Tennessee , Nort Carolina and Virgina
South Carolina, Mississippi, Florida, Alabama, Georgia, Louisiana and Texas seceded by 1861. After Lincoln called for troops, four more states seceded. Those states were Virginia, Arkansas, North Carolina, and Tennessee.
North Florida, South Kentucky, West Montana, Alaska, Mexico, Canada
By whom? The South called them The Confederate States of America - officially a separate nation, in their eyes. The North did not recognise the Confederacy, and simply called them The Rebel States.
South Carolina ;) anything else?