Answer:
Serfs worked for their lord's protection, and enslaved persons had no protection.
Answer:
C. Chemical weapons.
Explanation:
TL:DR Chemical gas is a war crime due to the amount of suffering it causes. Mustard gas burns the skin, Phosgene is impossible to see, and Chlorine can make you drown in your own body.
Machine guns had been in use and invented since 1908, with invention of weapons such as the Vickers and German Maschinegewehr 08. Trench warfare wasn't a weapon, but more of a tactic. Mines weren't a war crime either as they most likely weren't deemed to cause "unneeded suffering" and their purpose usually was to simply discourage the travel of an area. Usually, if you stepped on a mine you'd die.
Meanwhile, Chemical gas was simply invented on accident as the German Empire's scientist,
<span>To fill the labor shortage, Las Casas urged colonists to import workers from</span>
The Parliament passed
Molasses Act in 1733 in attempt to stop New England Yankee traders from trading
fish, beef, and pork with the French West Indies for molasses that were made
into rum<span>. Six (6) pence per gallon
on molasses imported from the French islands.</span>
