What is the main idea of the decline of the buffalo?

The decline of the buffalo was mainly due to overhunting by European settlers in North America during the 19th century, seeking to eliminate the primary food source of Native American tribes and to make way for agriculture and settlement. This led to a significant reduction in buffalo populations, which had devastating effects on both the environment and indigenous cultures. Efforts are now being made to restore buffalo populations and preserve their ecological and cultural significance.