Input (grade 7): Millon (1993, p. 24) Zenith The city reached its zenith between 150 and 450, when it was the center of a powerful culture whose influence extended through much of the Mesoamerican region.
Output (grade 6): Zenith The city reached its zenith between 150 and 450. It was the center of a powerful culture whose influence extended through much of the Mesoamerican region.