The main method to predict the future for the ancient Chinese were the Oracle bones.
People would write something on animal bones and then throw it into the fire. They would then interpret the future based on how the bone cracked in the fire.
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.
Answer: The US Army
Explanation: established on June 14, 1775 the US Army is the oldest branch of military. The army was essential to the US gaining independence because of the bravery of its soldiers and during the revolutionary war. Today more than two centuries later its members continue to define and protect the country and its people.
