I will re-read this thing but the guy's thesis is lame. The bottom line is that he wants to say is America suck back then and all these other people conspired to go along with it. Sure we had slavery at that time but we had huge war to overturn it so the Constitution would apply to everyone. Yes we were slow at correcting mistakes but our fore fathers had a vision that lead the way in insuring liberty for all. There was no way that it was going to change over night. But compared to other countries that have been around for a longer periods of time we did change over night. Our form of governmental society in less than 200 years has leveled mountains while other societies have languish in stagnation for thousands of years or have disappeared all together. This is why we are the strongest super power in the world today is because we stuck to the founding father's vision that was based on Judeo-Christian beliefs set froth in the Constitution and The Bill of Rights and through a huge sacrifice of life for these ideals we were able to implement it.
Take the time to read the De Tocqueville's book and I would also recommend Paul Johnson's "A History of the American People" and "Modern Times: The World from the Twenties to the Nineties". Hope this is helpful.