[From the article, "3 Biggest Mistakes America Ever Made"]

1) Slavery

At the time of the American founding, slavery was common practice. Blacks were sold into slavery by other black tribes. Africans and Muslims sold slaves to European and American slave traders.

[...]

Capitalism is the only system incompatible with slavery. Our Founding Fathers knew this, and they fought long and hard with the slave states, but those states were having none of it [...] so they compromised.

In any deal between good and evil, evil profits. Ayn Rand said, "In any compromise between food and poison, it is only death that can win." And so it did. Slavery led to the catastrophic Civil War. Approximately 650,000 Americans died so slaves would be free, to the great honor of this country (something the haters never mention). That horrible wrong was corrected at an unfathomable cost.

2) Jimmy Carter

Before Barack Obama, Jimmy Carter was easily the most disastrous president this country ever had. Many of the troubles we have today in the Middle East, and the rise of the global jihad, can be attributed to his policies. [...] It established that America would underestimate, misunderstand and downplay the threat from jihadis and pro-Shariah Islamic supremacists - another precedent Obama has faithfully followed and expanded upon.

3) Barack Obama

Nothing has ever happened to the United States that is worse than the presidency of Barack Hussein Obama. A committed Marxist collectivist, he has stood throughout his presidency against the very principle of individual rights that made America great. In abandoning our allies and aligning with the Muslim Brotherhood and other sinister groups, he has aligned with the most evil forces of the 21st century and overturned the order of the world. In abandoning and even actively turning against our allies (most notably Israel), he has made the United States of America, for so long the beacon of freedom in the world, into an untrustworthy ally, a nation that cannot be taken at its word.

We will be paying for Obama's presidency for decades to come. The fully dimensions of the damage he caused - the gutting of the economy, the new polarization of the races, the Iran nuclear deal and more - is likely only to be known once he is out of office. And America may never recover from this catastrophe.