Answer:
Robert Fulton is known for inventing the steamship engine.
Step-by-step explanation:
Robert Fulton was an American engineer, entrepreneur and inventor, known for developing the first steamboat, which became a commercial success.
Considered to be the creator of the steamboat, he was in fact the one who, thanks to his engineering skills, managed to make a previously known process really operational. This same engineering talent led him to realize, taking into account the invention of David Bushnell, the first military submarine.