What was similar about the Mayan and Aztec calendars? (1 point)
1. Both were built from observations of the moon that consisted of 30-day units.
2. Both had two smaller units called the Haab and the Tzolkin.
3. Both were based off of the Incan calendar and had a similar appearance to it.
4. Both were made up of two cycles that were used together to create a larger 52-year cycle.