Foreign traders were welcomed into chinese ports during which period

Foreign traders were welcomed into Chinese ports during the Song dynasty. The song dynasty was an era in the Chinese history that began in the year 960 and ended around 1279 due to a war with remnants. The song dynasty was founded by Emperor Taizu of Song. During the Song dynasty, the Chinese allowed other people from foreign countries to come to their ports and traded with them. Since they allowed foreigners to come and trade with them, they got a lot of valuables. Because fighting with remnants of the dynastic court, the song empire ended in the year 1279, after the fall of the song dynasty, the Yuan empire began.

the answer to your question is a. the salt plains

in 1811, he led an expedition, known as the george c. sibley expedition, to improve relations with the pawnee and kansa tribes, and also to locate the rumored jefferson's salt mountain

it was the "4. potsdam" conference that demanded the unconditional surrender of japan, since it was clear that the japanese would continue to find until the very last man otherwise.