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The coordinates below represent the longitudinal grid of the map.
British Territory original: 英吉利界 (Ying-ji-li jie). In the mid-19th century, Chinese maps often labeled the eastern United States as "British Territory," reflecting either the use of older source maps from the colonial era or a general categorization of English-speaking lands.
Spanish Territory original: 西班牙界 (Xi-ban-ya jie). Referring to the southern coastal regions of North America, such as Florida, which were historically under Spanish control.
Atlantic Ocean