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.
February 28, 1827. On February 28, 1827, the Baltimore & Ohio Railroad became the first U.S. railway chartered for commercial transport of passengers and freight. The first railroad track in the United States was only 13 miles long, but it caused a lot of excitement when it opened in 1830. Charles Carroll, the last surviving signer of the Declaration of Independence, laid the first stone when construction on the track began at Baltimore harbor on July 4, 1828.