An ounce is a unit of weight which is approximately equal to 28  grams. One gallon is equal to 128 ounces so there are 640 ounces in  5 gallons of water.
The first U.S. railroad to use a steam locomotive in revenue service was the South Carolina Railroad. It opened on Christmas Day 1830 using the Best Friend of Charleston steam locomotive on six miles of track in Charleston, South Carolina.
Railroads in America can be traced back to 1815 when Colonel John Stevens gained the first charter in North America to build the New Jersey Railroad Company, although it was not constructed until 1832. The NJRR later went on to become part of the Pennsylvania Railroad's far-reaching network.