350
ID: 4858
Palestinian Talmud completed - Shorter than Babylonian due to Roman persecution, less authoritative
ID: 4858
350
ID: 4917
St. Cyril becomes Bishop of Jerusalem - writes 23 Catechetical Lectures for those preparing for baptism
ID: 4917
350
ID: 5343
Decline of Roman mining - barbarian invasions disrupt operations, sophisticated drainage and extraction technology lost
ID: 5343
350
ID: 5756
Red Sea canal abandoned - silting and maintenance costs end 900 years of intermittent canal operation
ID: 5756