The 1970 census revealed that the U.S. population had just passed the 200 million mark and was the first to use computer tape for data collection.
Porcelain & tea innovation of the Song Dynasty(AD 960-1280) has the greatest impact on the expansion of global empires.It was really in the Song Dynasty that tea reached its cult status. It was drunk out of very beautiful, extraordinarily exquisite tea bowls made from porcelain, one of the glories of the Song Dynasty.The word "china" is appropriate for porcelain, because the Chinese developed the technology for its production. The Song Dynasty ceramic industry was basically the first commercialized industry.They produced the pieces in mass quantities for the imperial palace, but also for this newly arisen class of scholar-officials and an urban elite and for these restaurants.
<span>they had many wealthy people backing them up and they funded the cities .</span>
The North China plain is bordered on the north by the Yan Mountains, on the west by the Taihang Mountains and the Henan highlands, and on the southwest by the Tongbai and Dabie mountains. To the south it merges into the Yangtze Plain.
