Witch innovation from song dynasty has the greatest impact on the expansion of global empires?

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.