Answer:
Unlike the Greeks and Romans, the ancient Hebrews were not known for being scientists or philosophers or conquerors. It was their religion, Judaism, that proved to be of crucial importance in world history, both for its own sake and for being the religious root of Christianity and Islam.
It was the world's longest humanmade structure at more than four thousand miles actually constructed from a series of smaller walls that were connected together built to guard against Mongol invaders.
Hope this helps. :D
He was a son of the dynasty's founder Emperor Gaozu of Tang (Li Yuan), and in the intense rivalry developed between his older brothers Li Jiancheng the Crown Prince and Li Shimin.
