Answer: the Mayans created the first calendar.
The thermocline is the name for the layer of the ocean where the temperature drops with depth faster than in other layers, True.
I would assume the British, it's who they were fighting against.
Answer:
While it is misleading to view the stock market crash of 1929 as the sole cause of the ... of that October did play a role in the downward spiral of the American economy.
Explanation:
C. He became the first President