What did Huckleberry Finn teach us?

Can you elaborate on the profound lessons that Huckleberry Finn imparted to readers? Was it his bravery in standing up for what he believed in, or his unwavering loyalty towards his friends? Did the story emphasize the importance of individuality and self-discovery, or was it a critique of societal norms and prejudices? How did Huck's adventures and experiences shape his character and impact the readers' perspectives on morality and humanity?