Question

how did the frog once again become the unrivalled king of the bog?

Answer 1

after the nightingale had died there was no one in bingle bog to rival.his singing he was the only singer there now...so he again became the unrivalled king

Answer 2

The frog becomes unrivalled king of the bog again after the death of Nightingale at cunning strategy of thefrog. Finally, the he had become theking of the bog without any competitor. Frog was only one who liked to sing in the bog and voice has tricked her to make him teacher.