Two things that increased american interchanges in the late 1800s were "b. the telegraph and telephone," since both of these creations significantly accelerated correspondence and made it more productive.
Answer:Cervantes
Explanation:
Man of La Mancha is a 1965 musical with a book by Dale Wasserman, lyrics by Joe Darion, and music by Mitch Leigh. It is adapted from Wasserman's non-musical 1959 teleplay I, Don Quixote, which was in turn inspired by Miguel de Cervantes and his 17th-century novel Don Quixote.
Answer:
he discovered it by writing the lighting the lamp.
Explanation: