1000 BC â AD 1500
1000 BC â AD 1500
1000 BC â AD 1500
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Chichen-Itza - Observatory<br />
<strong>1000</strong> <strong>BC</strong>- <strong>AD</strong><strong>1500</strong><br />
•Mayans made advances in astronomy. They observed the<br />
movements of the sun, moon, and planets. Calendar system<br />
– 365 days farming schedule
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