The text structure of "last words of great men" can be characterized as

Compare/contrast.

Explanation:

'Last words of Great Men' by Mark Twain offers a comparison and contrast of the life story of great men and women. Twain provides a humorous element to subject to death and counter the seriousness of death through light-hearted feel. He shares the legacy of renowned people and describes their words that are admired worldwide and live on like "Napoleon's "tete, da'rmee" "Joan of Arc's "tramp, tramp, tramp, the boys are marching", 'Cleopatra said "The Old Guard dies, but never surrenders', etc. Thus, the poem adopts a compare and contrast characterization in it.

answer; beware of exaggerated claims without supporting evidence;