Greatest relative technological advancement in shortest amount of time

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What era of human civilization experienced the greatest and fastest (relatively speaking) increase in technological and industrial capabilities?

To clarfiy I mean, during which years did humans develop technology at the fastest rate, when did it start and when did it end? Not the most advanced, but just the quickest. This doesn't have to be for any particular reason either, just interested in what years you guys say we achieved the most.

My personal bet is between 1865 to 1945, the end of the American Civil War to the End of the World War 2. In these mere 80 years (a simple liftetime really) we went from men standing in line firing muskets, to splitting the atom. We went from amputating simple cuts and bruises, to penicillin. That's the era of human history that I personally would say is when we achieved the most in the shortest amount of time, but I'm interested to hear what you guys say.