Roosevelt
The first President to ride a train was Andrew Jackson. He rode what was known as the iron horse from Baltimore.
probably Andrew Jackson
Theodore Roosevelt rode in The Plunger.
It was on the Baltimore and Ohio line. I do not know if the train , itself, had a name. Jackson rode it for about 12 miles, in order to get into the city of Baltimore from the Washington Turnpike.
James Watts or George Stephenson
James Monroe
I think Theodore Roosevelt was the first to ride in a car, but it was before he was president. McKinley was the first sitting president to ride in a car.
Moses lived thousands of years before the first train rode the rails.
a train rode on them.
The adverb is "steadily", as it modifies the verb "rode".
Neither
the train he rode