Task: Text Simplification
Input (English): as the largest sub-region in mesoamerica , it encompassed a vast and varied landscape , from the mountainous regions of the sierra madre to the semi-arid plains of northern yucatán.
Output (English): as the largest sub-region in mesoamerica , it had a vast and varied landscape , from the mountainous regions of the sierra madre to the semi-arid plains of northern yucatán.