Answer:
D. Jews in Europe faced a series of attacks from Crusaders.
Step-by-step explanation:
The Crusades were holy wars fought by the Christian 'warriors' in order to recover the Holy Land from Islamic rule. Throughout history, there were a number of Crusades that were fought in the name of reclaiming the Holy Land.
From the very First Crusades, the Jews were discriminated against and attacked by the warriors. Jews in Europe were attacked, killed, and even tortured. Their social positions worsened, which also resulted in a feeling of hatred and ill-will between the Christians and the Jews.
Thus, the correct answer is option D.