Answer: The question is slightly a run on
Another way you could help improve the question would be this:
According to the legend Spanish explorer Juan Ponce de Leon, he was searching for the Fountain of Youth, which according to historians it was assumed that he was more likely seeking political power.
Explanation:
You could use other punctuation as well
What does Steinbeck use most predominantly to create the dynamic between Elisa and the visitor?
They build a bridge to cleverly take their animals across
The answer to your question is the third, fifth, and eighth sentence.
