Science and technology absent the U.S. Civil War

We all know that science and technology exploded in the period following the U.S. Civil War. Edison, Telsa, Westinghouse, Bell, Marconi etc. etc. The enormous investment in industry and technology necessary for the North to conquer the South, the production of a million man army for General Grant, the extermination of 2% of the total U.S. population in just a few years were an enormous incentive for the lethargic bureaucracies of intitutions and governments to actually be productive, for a change. And, they were! In order to win the war, machine tools, steam engines, telegraph systems, mechanical design, observation balloons, steel production, systems of industrial production etc. etc. etc. had to advance exponentially, so, unlike the usual preference of those in power for status quo., there was actually, really, rapid progress. And, this continued for some decades, during peacetime, by sheer inertia. But, suppose there was no U.S. Civil War. Suppose my old buddy Dan Sickles keeps out of trouble, gets the Democratic Party Nomination for President, and, surprising everyone but himself, beats the pants off Honest Abe, in 1860! I sure think old Dan Sickles could have done it too! So, Dan Sickles negotiates a gradual end to slavery over a period of a decade or two, with the Southern States, and there is no U.S. Civil War. What is the effect on Science and technology? I'd say, we're still stuck in nineteenth century "Steampunk". There simply isn't the financial or industrial infrastructure to support people like Edison, Tesla, Westinghouse, Bell, Marconi, Ford etc. etc. etc. They simply never happen. And, the Industrial Revolution more or less stalls at mid-nineteenth century. Institutions and governments are lost in endless trivia and running around in circles like they usually are, and no real progress ever occurs.