This is probably biological warfare because it's not allowed according to the Geneva congress. Using poisons, toxic matters, viruses and bacteria, as well as flamethrowers and things like that are forbidden or else it will be considered a war crime and people will answer for it. It was practiced in World War 1 but was forbidden after.
The answer in the question provided is letter b, lack of
industrialization. It is because developing nation or country usually involves
of having industrial bases to be less develop than of the developed countries
in which lack industrialization is one of the things found in a developing
nation.
"<span>b. Most African American sharecroppers ended each year owing money to the landlord, thus preventing them from leaving the land" is the best answer from the list. </span>
