3. Zhou Dynasty.pdf
3. Zhou Dynasty.pdf
3. Zhou Dynasty.pdf
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use of iron<br />
Pattern 5.<br />
Accomplishments<br />
<br />
perfection of the calendar<br />
regular astronomical observation & recording of astronomical<br />
events<br />
1 st geographical maps<br />
division of China into the Nine Provinces<br />
discovery of magnetism<br />
acupuncture<br />
Masters of bronze, horse drawn chariots, crossbow<br />
Source: http://www.chinaknowledge.de/History/<strong>Zhou</strong>/zhou-tech.html