To avoid this fate, six world leaders have agreed to duke it out - the winner being the undisputed ruler of the world.

Håkon was thus the undisputed ruler of the country.

China may now be the undisputed ruler of this former British colony.

Sieciech became then in the undisputed ruler of the country, and made his own coin.

They began to see themselves as undisputed rulers over a self-sufficient world.

Thus his position was cemented as the undisputed ruler of the country.

As the undisputed ruler, the sultan has been traveling around Oman to listen to his subjects.

He is the ultimate, undisputed ruler of all the monsters underground.

He was part of the creation of presidents and the undisputed ruler of Brazilian press.

He was soon the undisputed ruler of the Empire.