I took this already your answer is 1,000
B the president is the answer.
The answer is b because the empire made an advance
Answer:
260 days Of all the ancient calendar systems, the Maya and other Mesoamerican systems are the most complex and intricate. They used 20-day months, and had two calendar years: the 260-day Sacred Round, or tzolkin, and the 365-day Vague Year, or haab. These two calendars coincided every 52 years.
The answer you are looking for is "World War I"
