Earlier quoted context omitted.
I think this is also the explanation for American success in the 20th century. The United States as we know it is, like all empires, built on the spoils of war. The United States was able to capture the best and brightest scientists. These people were brought into a system whose structure and demands were dictated by the needs of a growing government and military. This is the fuel that drove American exceptionalism.
What drove American exceptionalism in the 20th century was still largely what drove its exceptionalism in the 19th and earlier centuries: chattel slavery and black exploitation. Slavery wasn't phased out immediately after the emancipation proclamation. 1) Slavery was still legal in the north after that signing and 2) states and counties did not enforce the law consistently (e.g. Juneteenth), and 3) criminal justice s…
My brain hurts stringing this logic together. Is that was you're implying?