The South was more or less forced to industrialize after the burning of their main crops and loss of so many men.
The (Yellow River) is especially important to China’s early history. Winds from the Gobi Desert blow (sediment/sand) onto the river valley. When the river floods, it then deposits the rich material onto the surrounding plain. Because of this (Farming) was made possible in China.
The end of the Ice Age meant that there was going to be much more water than land. That flooded the ways of transport that Early People had, the result was that it as even more difficult finding food and shelter.
Have a nice day! :)