Final answer:
Mark Twain uses local color humor, regional dialect, and irony to bring the stories into his era.
Step-by-step explanation:
In his parodies, Mark Twain also uses several literary techniques to bring the stories into his era. For example, in 'The Celebrated Jumping Frog of Calaveras County,' Twain uses local color humor and regional dialect, as well as featuring an outsider entering a new place, which is a common theme in Twain's work. In 'The War Prayer,' Twain demonstrates mastery of irony as a way to satirize the Spanish-American War.