Выполните задание. "Part of the reason the news of great waterfalls in central Africa was so __________________ in the middle of the 19th century was that many people thought that the centre of the continent was a desert," he added.

Part of the reason the news of great waterfalls in central Africa was so astonishing in the middle of the 19th century was that many people thought that the center of the continent was a desert," he added.