Bonsai, Japanese for “tray planting,” refers both to the art of cultivating dwarf trees and to trees grown by this method. Such trees are not naturally miniature—they are kept small with cultivation methods like pruning and tying branches with wire to “train” them. The art originated in China but has been developed primarily by the Japanese. Bonsai may live for a century or more and are passed from generation to generation as valued heirlooms. What harmed many of Japan’s bonsai trees in 1923? Discuss