Answer:
During the reign of Queen Elizabeth, the story of King Lear and his sons was very popular and relevant to most Englishmen who knew the course of this story well.
The popularity of this story inspired several authors, creating at least a dozen books available to anyone curious, which remained even after Queen Elizabeth's death.
However, the characters in these books had little personality and were underdeveloped, making the story obvious and not arousing readers' excitement.
Shakespeare had access to these books and probably used them to write his greatest tragedy, King Lear.
Providing a completely new construction and outfit to the characters, Shakespeare show them as credible, complex characters, full of layers and motivations that excited the audience.
Step-by-step explanation:
The above excerpts were written according to what was asked in the question above, adding an appropriate topic and an appropriate final emphasis.
The excerpts reveal Shakespeare's relevance in the new guise and presentation of King Lear and his daughters, taking a story that was very demotivating and boring in something complex, stimulating, non-linear and totally different from what has been seen so far, consecrating Rei Lear as one of Shakespeare's greatest works and reaffirming the talent in creating characters and narratives, which he possessed.