Simplify the following text for a Grade 11 native English-speaking person.
Original: The Emperors during this time , which spanned the Meiji , TaishÅ , and ShÅ wa eras , are now known in Japan by their posthumous names , which coincide with those era names : Emperor Meiji ( Mutsuhito ) , Emperor TaishÅ ( Yoshihito ) , and Emperor ShÅ wa ( Hirohito ) .
Simplified: The Emperors during this time , were Emperor Meiji ( Mutsuhito ) , Emperor TaishÅ ( Yoshihito ) and Emperor ShÅ wa ( Hirohito ) .