The Inca developed important medical practices, including surgery on the human skull. In such operations, they cleaned the area to be operated on and then gave the patient a drug to make him or her unconscious—procedures similar to the modern use of antiseptics and anesthesia.
Well the l<span>ongbow, made the classic attack of sword, lance or joust useless, for the most part.
When someone could kill a soldier from a hundred yards, there was no need to get close enough for horse or foot soldier to fight
.
Gunpowder brought in the canon, and this was a weapon that was effective even farther than the long bow.
It could kill multiple people at long range, plus, it made the stone castle obsolete, because canon balls could blast them apart.</span>
I think the answer is the setting
A. The United States produces more oil than any other country
It would seem to most people that the U.S. doesn’t make a huge amount of oil since it imports so much, but the reason that so much is imported is due to the fact that the vast majority of that oil produced in country is saved in National oil reserves for future use in hard times.
