Tại sao nói sự phát triển của hình thái kinh tế - xã hội là quá trình của lịch sử tự nhiên

When zhang qin went to explore west, he brought back stories of

Which phrase correctly completes the statement? "the korean war " lasted 3 years. has never ended. was won by north korea. was won by south korea lasted 3 years. has never ended. was won by north korea. was won by south korea.

Which scholars explained the roles of the public and private sectors by comparing it to maneuvering a boat?