Final answer:
The most beloved poet of the nineteenth century is Walt Whitman. He celebrated the common language of the common man in his works, making him widely loved and celebrated.
Step-by-step explanation:
The most beloved poet of the nineteenth century is Walt Whitman.
Whitman, born in 1819, was a leading figure in American poetry during the nineteenth century. He celebrated the common language of the common man in his works, making him widely loved and celebrated.