Science: Ptolemy's 'Geography, ' c. AD 150 -- Exchange: Al-Idrīsī, AD 1154 -- Faith: Hereford 'Mappamundi, ' c. 1300 -- Empire: Kangnido World Map, 1402 ...
Researchers have created a new road map of the Roman world that could help historians study how religion, migration, trade, and even pandemics spread across the Roman Empire 2000 years ago.