16. What is one development during the Han and Tang dynasties that contributed to the increased population of southern China? (1point)

One significant development during the Han and Tang dynasties that contributed to the increased population of southern China was the implementation of advanced agricultural techniques, including the introduction of new crop varieties such as rice that could be cultivated in the warmer climates of the south. The use of irrigation systems and improved farming tools also enhanced agricultural productivity, making the region more capable of supporting a larger population. Additionally, government-sponsored initiatives to promote settlement and agricultural development in southern territories helped to attract migrants from the north.