https://www.khanacademy.org/humanities/world-history/x66f79d8a:regional-webs 2026-06-30T19:50:47.936059619Z Regional Webs (200 to 1500 CE) The fall of Rome and the Han Dynasty sent shockwaves through the ancient world. Were these collapses followed by a dark age, or did a period of restructuring lead to a new era of prosperity and innovation? unit