Final answer:
The Great Steam Race of 1878 started in Providence, Rhode Island and was a display of technological prowess between the USS Wachusett and HMS Shah.
Step-by-step explanation:
The Great Steam Race of 1878 began in Providence, Rhode Island. The event was between the steam-powered corvette USS Wachusett and the British ship HMS Shah. This historical race reflected the competitive spirit of the age of steam, showcasing the technological advancements of the time. While not a formal race, it was an impromptu test of speed and machinery between two powerful naval ships.