manorialism feudalism cash peasant labor religious minorities Edward III Parliament Dante Divine Comedy Jews wages condottieri mercenary soldiers Black Death labor shortage Avignon bubonic plague Hundred Years' War The Divine Comedy The Great Schism famine little ice age Golden Bull of 1356 Germany Emperor Charles IV "king of the Romans" Joan of Arc heretic peasant foot soldiers mounted knights clocks pogroms Christine de Pizan flagellants The Canterbury Tales Geoffrey Chaucer lord-vassal relationship economic depression Petrarch Latin vernacular raise tax revenues gunpowder cannon serfdom