B is the answer because it’s true
The Caste system was based on the religion of Hinduism, whilst in the Feudal system the Roman Catholic Church and in it's beliefs were followed. The highest class for the Feudal system was the King; but in the Caste system it was the Brahmins (Priests), although the king was part of the second tier the Kshatriyas. The Feudal system existed during the middle ages and when it ended it caused the end of the middle ages. The Caste is still being followed today in India.
C. Discovering vaccination and microbial fermentation
A microbiologist who discovered microorganisms cause fermentation. Eg. leading to food spoilage
The clash between Carthage and Roman over the control of Sicily.
<span>The most logical answer would be cotton. With Texas as such a large state and having such a large ability to produce such a plant, this would add such a glut to the cotton market that it would drive down overall prices significantly.</span>