Answer:
Agricultural yields were about 2 tan (a unit of about 110 pounds or 50 kilograms) of grain per mu during the Song dynasty, compared with 1 tan during the early Han and 1.5 tan during the late Tang.
Explanation:
The answer is D I think I’m sorry if it’s wrong.
B.
People started to fear that communism would spread to the United States.
the main characteristic of the First Industrial Revolution is the replacement of manufacturing by the maquinofatura. The industries emerged, especially developing the textile industry whose productivity increased due to the insertion of spinning machines, the mechanical loom and the steam machine.
