Trees 3-5 percent causing an increase in temperature and were dying from droughts that happened leaving dehydrated and dead vegetation and so, had no way of food to survive as many say "they did this to themselves" which I slightly agree with but that is some of what the Mayans lacked.
It must be the second choice “It was important to have popular support beforehand”
Evidence: “...but he postponed action against slavery until he believed he had wider support from the American public.”
Answer:
Caligula was a great-grandson of Augustus; Claudius was a nephew of Tiberius; and Nero was the great-nephew and adopted son of Claudius. ... natural desire to found a dynasty, but he had no son and was therefore obliged to select his successor.... The ablest of the line was Tiberius.
"Two mountain ranges, the Alps and the Apennines, helped to protect Rome from invasion." I researched it and found this on a reputable source. Therefore, it would be B.
