Interesting post, so keep posting!
You might want to include your sources. It eliminates any plagiarism suspicions . Because if you just copied and pasted from https://www.quora.com/What-modern-technology-was-within-the-technological-capabilities-of-older-civilizations-e-g-Assyria-or-Ancient-Rome-but-wasnt-done-because-they-were-ignorant-of-the-principles
folks might not like it.
source updated and linked to my answer on Quora=D