With the invention of refrigeration, they started the practice of slaughtering cattle before the train journey. They packed the meat into refrigerated freight cars, known as "reefers". That facilitated the shipment of meat by train over long distances, with the meat arriving at its destination in edible condition.
KMT - Kuo Mintang government forces.
<span>CPC - Communist Party of China.
I hope that helped :P</span>
The answer should be industrialized nations.
Thank you to USA.
