There is no specific year in which all Mayan cities fell into ruin. The decline of the Mayan civilization occurred over several centuries, with different cities and regions experiencing decline at different times. However, the Classic period of the Maya civilization, which is characterized by the most impressive city-states and monumental architecture, came to an end around the 9th century AD. This period of collapse is often attributed to a combination of factors such as overpopulation, warfare, environmental degradation, and drought.
