An awful lot has happened since 1789. The frontier was settled. People left farms for the city. Some didn't find jobs. Some didn't like what they got for their work.
Universal suffrage was introduced (depending on what people at any given time meant by "universal). A lot of immigrants arrived. We became the policeman of the world. We got rich. People started to feel entitled.
Laying the responsibility for how things are now on the Civil War or Abraham Lincoln seems a little oversimplified. Maybe you should consider those other changes as well.
—Laying the responsibility for how things are now on the Civil War or Abraham Lincoln seems a little oversimplified. Maybe you should consider those other changes as well.—
I consider it the beginning, and a strong one it was.