Did the American Civil War create a new America different from Europe?

I'm Korean so I speak English wrong and don't know much about America. Just watching American movies and TV shows, I only understand America vaguely.

However, as I read Margaret Mitchell's Gone with the Wind, I learned something new.

While Japanese colonial rule, Korea imported English, Western-History and culture. It was not a western culture, but a westernized Japanese culture.

The Japanese rebelled against the Christian nation, the United States, because they worshiped the Japanese emperor as a god. Thus, Christianity was described as fanaticism, ignorance, and medieval barbarism.

The Japanese expressed Americans as vulgar humans who only reveal money. So, I misunderstood Americans as revealing free sex and money.

However, as I read Gone with the Wind, I learned that the ideas that were infused by the Japanese were a misunderstanding.

First of all, please understand my poor English. The rise and fall of Irish immigrant families, led by Scarlett O'Hara, made me understand the USA nation's founding and birth.

Gerald O'Hara came to the United States with bare hands as a poor Irishman and, after all the hard work, succeeded as a slave farmer. The first people to come to the United States did not consider physical labor because they all started out as  physical workers.  If he was royal in Europe, he would have been a physical worker in the United States. So, all Americans were in equal positions.

The process of Gerald O'Hara's success as a slave farmer was very realistic and fun.

Slave farmers in the south of the United States enjoyed the fact that, like black slaves, they lived like European royalty and nobles.  In the film, the spectacular and majestic South American mansions, dance parties and costumes seemed to see the European royal palace.

It was interesting to see that the Southerners of America thought they were Europeans. In short, the southern part of the United States was to imitate the European royal family.

However, as the Civil War broke out, the southern nobility fell. The process of the Gerald O'Hara's collapse through the Civil War was very realistic and fun.

I especially enjoyed the appearance of American women, children, seniors, common people and black people.

Scarlett O'Hara's transformation was really shocking.  Scarlett O'Hara, though not a nobler, was born in a family of successful Irish immigrants and grew up like a princess while attended by black slaves.

She lived like a fairy tale princess while dating a lot of men like Cinderella. But the wretchedness of war took everything from her. Through the death of her most beloved and trusted mother, Alan, she transforms herself.

She grew up like a princess in a fairy tale, but becomes a tough woman for her family's revival.

To protect Tara's farm, she even takes away his sister's fiancé. Even though she was married without love, She was dedicated to the revival of the family.

Since the southern part of the 19th century America was a purist medieval society, Scarlet's act of three marriages was criticized.

However, after the war, widows were remarried in the southern United States, where only ruins, widows, and orphans remained.

The southern part of the United States, with its purist medieval culture, transformed itself into a new society through the Civil War.

Southerners who lived as nobles, possessing black slaves, became commoners after the Civil War, was changing the social structure and order of the southern United States.

Southern feudalism collapsed as Southerners, who possessed black slaves and lived nobles, became commoners after the Civil War. 

As the North, the capitalist society, conquered the South, the feudal society, the present America was born.

In particular, I believe that the North created the present American centralism as the Europeanism of the South collapsed.

Through the Civil War, the United States was cut off from Europe and a true America was born.