The Zhou Dynasty saw a shift in power from the king to the feudal lords. During this time, astrological maps were made, a calendar perfected and magnetism discovered. Iron tools and weapons were forged during the Warring States Period and fertilizers and pesticides began to be used for crops. Basic arithmetic, fractions and geometry were also developed.
The Zhou Dynasty is divided into the Western Zhou, from 11th century B.C. to 771 B.C., and the Eastern Zhou, from 770 B.C. to 221 B.C. The Eastern Dynasty is further divided into the Spring and Autumn Period and the Warring States Period, both of which were characterized by turbulent wars. Despite this, the Zhou Dynasty saw far more developments in economy, politics, science and culture than the preceding Shang Dynasty.
One notable achievement is the duration of the Zhou Dynasty. Lasting for over 800 years with 37 kings, it is the longest of all the Chinese dynasties. Confucianism, Daoism and other Chinese philosophers all gained prominence during these centuries. The Eastern Dynasty was famed for the Hundred Schools of Thought, with criticisms and thoughts recorded in the Book of Poetry, which was the first important piece of Chinese literature.
The Zhou Dynasty was followed by the Qin Dynasty.