Last updated 2 years ago
OVERCROWDING - With a large population and a LACK of FLAT LAND for settlement, Japan is a crowded country. LAND is EXPENSIVE, especially in the cities and many people COMMUTE long distances to work. During rush hour, subway trains are so crowded that guards have to push commuters on board. The UNCOMFORTABLE JOURNEYS that people endure INSPIRED Japanese technicians to INVENT PERSONAL STEREOS so people could listen to music while travelling.