400
ID: 4875
Exilarch vs. Academies tension - Hereditary political leadership conflicts with rabbinic academic authority
ID: 4875
400
ID: 4931
Birth of St. Leo the Great in Rome - future Pope and Doctor of the Church
ID: 4931
400
ID: 5344
End of systematic ancient mining - collapse of Western Empire ends large-scale mining until medieval period
ID: 5344