The most accurate statement regarding the impacts of Moctezuma I on the Aztec Empire is:
Moctezuma I expanded the Aztec Empire's territory. He also solidified alliances, which granted him more power. He enacted political and social reforms as well, such as requiring religious schools across the empire.
Moctezuma I is recognized for his significant expansion of the empire through military conquests and the solidification of political alliances, which strengthened the Aztec's position in Mesoamerica. He implemented reforms that laid the foundation for educational institutions, particularly focused on religion, highlighting his commitment to both governance and the cultural development of the Aztec society.