samuria warriors
military aspects of Asia
The Great Wall of China is a series of fortifications made of stone, brick, tamped earth, wood, and other materials generally built along an east-to-west line across the historical northern borders of China in part to protect the Chinese Empire.
The samurai, a class of highly skilled warriors, gradually developed in Japan after the Taika reforms of 646 CE. The reforms included land redistribution and heavy new taxes, meant to support an elaborate Chinese-style empire.