If you're referring to the independence of the USA from England,
the country celebrates that occasion on July 4 of each year.
I believe the answer is: normative crisis model
The normative crisis model would see individual's psychological development in a universal manner. This model is perceived to be outdated by most experts today since it does not accounted the individual's unique experience/situation that influence their psychological maturity.
The Pendleton Act of 1883 classified jobs to people based on merit rather than political connections.
