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.
Indian tribes had reservations with defined borders. These borders were
able to be changed at any time, but they were still defined nonetheless.
These reservations were usually much smaller than the area in which the
tribes used to live, answer (A).
Answer:
If you are saying not on earth, are you talking about other planets or can it be stars because stars are extremely hot with white being the hottest and red being the coolest.
B - Slave revolts.
The revolt of Spartacus, which was also the most famous slave uprising in the history of the Roman Empire, lead to questions about the usefulness and effectiveness of the current governmental system in Rome. This, along with other factors, made them plunge into a crisis which ended through the transition to an empire.
Answer:
The Union's industrial and economic capacity soared during the war as the North continued its rapid industrialization to suppress the rebellion.
Explanation: