When was the steamboat invented?

In 1803 Robert Fulton invented the steamboat

In 1736, Jonathan Hulls took out a patent in England for a Newcomen engine-powered steamboat. (but James Watt's improvement to the steam engine made it feasible).

In France, by 1774 Marquis Claude de Jouffroy and his colleagues had made a 13-metre (42 ft 8 in) working steamboat with rotating paddles.

From 1784 James Rumsey built a pump-driven (water jet) boat and successfully steamed upstream on the Potomac River.

In 1788, a steamboat built by John Fitch operated in regular commercial service along the Delaware river.