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,
A legal goes through the steps and processes to become a citizien of the country being moved into while an illegal is one who simply disobeys the law and doesn't take the essential steps to become a citizen <span />
Hydroelectric power and natural gas was introduced in the late 1800s
Preamble: Both preambles begin with “We the People”, demonstrating that it is from the people that government secures its power.
Articles: There are seven articles in the U.S. Constitution and the Florida Constitution has 12 articles. The Bill of Rights was added to the U.S. Constitution in 1791 while the Florida Declaration of Rights was included in Florida’s last constitution, which was ratified in 1968.
Amendment Process: Both constitutions are “living documents” as each provides for making changes (amendments). The U.S. Constitution is amended by elected federal and state legislators while the Florida Constitution is amended by voters.