Briefly describe the rise of Japanese Zen rock gardens

Quick answer：

The rise of Japanese Zen rock gardens, known as 'kare-sansui,' can be traced back to the 15th century when Zen Buddhism was introduced to Japan. These gardens emphasize minimalism, simplicity, and the natural elements of rocks, sand, and often moss. They were developed as a meditative practice for monks, reflecting the Zen philosophy of finding enlightenment in simplicity and the impermanence of life. Over time, kare-sansui gardens became popular among the elite and were incorporated into traditional Japanese architecture, symbolizing tranquility and spiritual balance.