A constitution is a statement of the basic principles and laws of a nation, state, or group, such as the U.S. Constitution. Another very common meaning of constitution is the physical makeup of a person. So think of a constitution as how a body (yours, the government's) is set up. If you have a strong constitution, it means you don't get sick very often.
I think the focus of the story is on Beowulf as a hero rather than a king because it is his heroic deeds that lead to him being offered the throne. Also to be king one must possess some type of heroic qualities in order to rule a land and its people.
Beowulf is a hero and an example of a great warrior. He fights against monsters. In the section of the poem we are about to discuss, Beowulf is ready to fight a dragon with his thane Wiglaf.He is going to fight a dragon.EOWULF: The last moments In the society in which the poem Beowulf takes place, war and kingship are normal factors in daily life.