渗透压单位

视频简介

It was the world's last Islamic empire - a super-power of a million square miles. From its capital in Istanbul it matched the glories of Ancient Rome. And after six centuries in power it collapsed less than a hundred years ago. Rageh Omaar sets out to discover why the Ottomans have vanished from our understanding of the history of Europe. Why so few realise the importance of Ot...。