Which achievement played an important role in pre columbian mesoamerican civilizations?

One significant achievement of pre-Columbian Mesoamerican civilizations was the development of advanced agricultural techniques, particularly the use of chinampas, or floating gardens. This innovation allowed societies like the Aztecs to maximize agricultural output in the challenging environments of swamps and lakes, supporting large urban populations. Additionally, the establishment of complex political and social structures, along with advancements in writing and mathematics, facilitated trade and cultural exchange, further enhancing their civilizations' growth and stability.