D. The reason for the fall of the Maya civilization is still unknown. There are many different theories attempting to explain the cause of the Classic Maya collapse and the abandonment of Maya cities in the southern Maya lowlands of Mesoamerica between the 8th and 9th centuries: climate change, drought, deforestation, etc. but although the drought is the leading theory at the moment the truth is yet unknown.
Serfs, also known as peasants, were the lowest class of citizen in feudal societies. They were allowed to live on land own by Lords in return for labor, which was practically slavery.
Islam was brought to Mali and other Western African civilizations during the 9th century by Muslim Berber
Answer:
april 30, 1948 to february 18, 1951
Explanation:
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Answer: Option C. It guaranteed all people the rights to liberty and property.