Both of the Mayans and the Aztecs developed advanced calendars and had a keen understanding of astronomy.
Explanation:
I go first to the health center or the person who are the in-charge in giving the anti-polio and anti-boster that why is it they ask for money for the vaccine. I think the vaccine is free, so they need a money to spend for it. Then, after i muster an information from them, I will go to the family and tell them the reliable information I get
Answer:
C. It is a highly developed economy.
