Answer:
It probably hasn't happened because the theory behind Marxism is wrong. A government can't control the economy efficiently enough for it ever to work well enough for communism to be practical. That's why there are almost no communist countries left today.
Answer:
translated their writings from Syriac, Greek, and Sanskrit into Arabic and then produced new medical knowledge based on those texts. In order to make the Greek tradition more accessible, understandable, and teachable, Islamic scholars organized the Greco-Roman medical knowledge into encyclopedias.
Explanation:
Answer:
requiring all children to attend school
I'm pretty sure it's D) their
One should always learn from their past mistakes and avoid them in the future.