Some will inevitably chime in here... oh yeah, what about the SLAVES? Okay... it was our system and our fundamental principles which ultimately prevailed in ending slavery. It took a while, we had to fight a bloody war, but eventually the principles of liberty prevailed.
The principles of liberty were thwarted by the constitution. It enshrined slavery, 3/5ths compromise, prohibition of legislating against slavery for 12 years, even the electoral college that gave small states, collectively more power than big states, so the big states couldn't legislate freedom.
You are wrong on virtually every inane point you are trying to make here. The Constitution did NOT enshrine slavery. It specifically ended the slave trade. The 3/5 compromise was to prevent Southern slave populations from being counted in apportioning congressional representation which would have given Southern states far more political power than Northern states. The electoral college was to prevent states with larger populations from ruling over everyone. The largest population states of the time were the slave states.
Again, you have to understand that slavery was more of an economic issue than a social issue in the mid 1800s. Modern progressives like to imagine a scenario where the righteous north was standing up for freedom of black people and the deplorable south was rebelling against that. This is just a flat out fallacy. The primary issue was economical. Slaves weren't even considered "people" by the United States Supreme Court and they certainly weren't considered people with constitutional rights of citizens. Even after they were freed, it took another century to gain their civil rights.
BUT... It was the foundation and principles on which this country was established that ultimately prevailed.