Answer:
Explanation: During the late Middle Ages, the Great Famine occurred which actually reduced the population of Europe into half. This occurred along with series of plagues and deaths all around Europe. The Mongols were able to strengthen its empire. In this ear, France and England also had serious conflicts known as the Hundred Years' War. The war between Christians and Muslims resulted to the Crusade of the Christians. ANswers are B. D. and E