The Principia Mathematica was written by Alfred North Whitehead
Answer: During the Civil War, the North had a larger population, greater access to the navy, more industrial power and better access to gunpowder.
Well for some to list off, there's the Washing Machine, Microwave, ATMs, and one of the biggest changes being Radio by Ernst Alexanderson and Reginald Fessenden. There were also electronic televisions by Philo Farnsworth in 1923, later on to be adapted by your modern television creators like Sony and Sharp.
There's a lot of inventions that occurred during the 19th and early 20th centuries. I've only named a few. There's also during that time period advancements of Air Travel after<span> Orville and Wilbur Wright in 1903. As well as Military Tanks, advanced guns, gun silencers for the Military, as well of course, the Atomic Bomb in 1945.</span>
The Corps of Discovery refers to the military unit that took a two year expedition with Lewis and Clark in order to explore the land recently bought by the US government from France. This territory became known as the Louisiana Purchase.
When exploring with Lewis and Clark, the Corps of Discovery went through several different states that exist today. This includes Kansas, Nebraska, Montana, Idaho, and Washington. Essentially, this route went from Missouri to the Pacific Ocean in Washington, covering the middle of the continental US all the way to the Northwest corner of the US.
