Dr. Richard Gatling's 1862 invention of the Gatling gun, or rapid-fire weapon, was used both in the American Civil War, but also in the Spanish-American War. The Gatling gun, and later invention of the Maxim gun, revolutionized warfare.
The British government relaxed rules regulating trade for the American colonies in the late 1600s because the British hoped the colonies would become wealthier and spend more on manufactured goods from Britain.
Barbarian groups were able to weaken the Byzantine Empire<span> because the empire itself had several unprotected areas for warring </span>groups<span> to invade. Hope this helps! -Sammy</span>
