~800-300 BC generated most of our surviving major religions (the major exceptions being Christianity and Islam, but both trace their origins to a religion that was formalized and created or finalized [most of] its canon in that time) plus the beginnings of mathematics as we know it, our earliest writings that are kind-of science and that often represent the founding documents of entire fields of study, the foundations of basically every major field of philosophy, the study of history in something like the modern sense, et c. It was a period of awakening for modern humanity from China to the Mediterranean.

Admittedly that probably can't be attributed to any one technology or idea, but I'd put that as a solid contender for a third entry in your list.

[EDIT] for a fourth I'd skip some of the other suggestions in this thread like the Enlightenment or Renaissance, and instead add The Printing Press.