-
Submarine
The first submarine was invented by Cornelius Drebbel. The submarine is a submersible water vehicle. It was first invented by a Dutchman but is now available in all millitaries. This changed warfare by now countries could get information from under water while being undetected. -
Cotton Gin
The Cotton Gin was invented by Eli Whitney. It greatly increased the amount of slaves and slave activity. Cotton production expanded from 750,000 bales in 1830 to 2.85 million bales in 1850. The machine picked cotton from its seeds to be made into clothing. -
Light Bulb
The light bulb was invented by Humphry Davy in 1802. The light bulb was needed to be able to see in dark areas. The light bulb changed society by forever replacing the candle as a source of lighting, -
Machine Gun
Hiram Maxim invented one of the first models of the machine gun. The machine gun is a fully automatic firearm. This gun was invented for the wars and millitary use. This would change the history of war because now you could shoot hundreds of bullets a minute rather than one at a time.
