Why didn't China become a world superpower when it first invented gunpowder, printing, paper, the compass, and great ocean sailing ships, before the West did?

為什么中國在發(fā)明火藥、印刷術(shù)、造紙術(shù)、指南針和遠(yuǎn)洋航行船后,沒有比西方更早成為世界超級大國?