秦汉时期的幽燕，地处古代中国农牧业两大自然经济区域交汇地带，平原、丘陵、山地、河流、湖泊兼备，自然资源丰富，形成该地区独具特色的农牧业生产。燕都蓟城交通便利，“富冠海内”，商业繁荣，既是北方手工业中心，又是当时重要的商业大都会，各民族经济交流的中心。%YouYan area of Qin and Han dynasties is located on the convergence zone of two nature farming and animal husbandry economic regions in the ancient China, has both plains, hills, mountains, rivers, and lakes, and has abundant natural resources, which forming the unique farming and animal husbandry production. Ji city's transportation is convenient, and rich, commerce boom, and is both manufacturing center in the north and the important commercial metropolis, and the center of the national economy communication.
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