Question

1. what invention did samuel morse perfect?

the sewing machine
interchangeable parts
the telegraph
the steam boat

Explanation:

Samuel Morse is known for perfecting the electric telegraph, along with developing Morse code for long-distance communication. The other inventions are associated with different figures: the sewing machine with Elias Howe, interchangeable parts with Eli Whitney, and the steamboat with Robert Fulton.

Answer:

○ the telegraph