According to the online article about using maps, which of the following map elements is used to understand the symbols, colors, and shapes on a map?

The zhou dynasty (1046-256 bce) was the longest-lasting of china's dynasties. it followed the shang dynasty (c. 1600-1046 bce) and it finished when the army of the state of qin captured the city of chengzhou in 256 bce.

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