Livestock and meat - processing industries. <span />
Soon after the death of Oliver Cromwell, Parliament made his son, Richard, the "Lord Protector," although he was unable to continue the policies of his father and failed as a leader.
The Battle of Antietam, also known as the Battle of Sharpsburg. 22,000 casualties, actually.
It could be argued that one of the main ways in which European culture flourished in the Middle Ages was that Monks took "center stage" when it came to studying things like mathematics and religion, and paved the way for many skilled artisans who would later emerge in the Renaissance.