How did mountains and deserts affect the development of the earliest chinese civilizations

The large land was isolated from much of the rest of the world by dry deserts to the north and west, the Pacific Ocean to the east, and impassable mountains to the south. This enabled the Chinese to develop independently from other world civilizations.

the correct answers are 1, 2 5, 6

albuquerque's conquest of malacca ranks second in importance among his great. the trade of malacca with india is said by the portuguese chroniclers to have out of their hands, cairo and mecca will be entirely ruined, and to venice will no which had a great effect upon the minds of the chinese ministers