What is the approximate proportion of southern population to northern population?

When the American Civil War began, the South had about 9.5 million people - including 3.5 million African Americans. About one million white male people, ages 15-40, lived in the Confederacy. Compared to the North it had about 22 million people at the outset of the war, with more than four million of them being men between the ages of 15 and 40 - the age bracket suitable for military service.

Explanation:

The American Civil War, also known as the Civil War of the United States, was a civil war between 1861 and 1865 in the United States, after several southern slave states declared their secession and formed Confederate States of America, known as "Confederation" or "South". The states that did not rebel became known as "Union" or simply "North." The conflict originated in the controversial issue of slavery, especially in Western territories. Foreign powers did not intervene at the time. After four years of bloody fighting that left more than 600,000 Americans dead and destroyed much of the southern infrastructure of the country, the Confederacy collapsed, slavery was abolished, a complex reconstruction process began, national unity returned and the guarantee civil rights to freed slaves began.

can you explain a little further maybe give multiple choice? ?