推荐回答(5个)
秦始皇当时采取的是“远交近攻”方式,统一了中国。
楚国在秦国的东南,与秦国接壤,秦国就先把它灭掉。燕国和齐国离秦国较远,待灭掉周围的国家后,秦国才最后先灭掉燕国,后修理齐国。
结合下面的地图,就不难理解了:
![](/picurl?url=https%3A%2F%2Fiknow-pic.cdn.bcebos.com%2F32fa828ba61ea8d37a4b6bac960a304e251f5828%3Fx-bce-process%3Dimage%252Fresize%252Cm_lfit%252Cw_600%252Ch_800%252Climit_1%252Fquality%252Cq_85%252Fformat%252Cf_auto)
战国时期,各国纷纷变法,实现由奴隶制向封建制的转变。三晋、田齐都是由封建士大夫家族推翻奴隶制君主,从而建立的封建国家,立国后又招贤纳士、变法图强,国力大增。秦、燕没有发生内部政变,也实行了政治变革,比如秦孝公任用商鞅、燕昭王任用乐毅,完成了奴隶制向封建制的转变。唯独楚国,虽然也实行了变法,却是当时各大国中唯一变法失败的国家。楚悼王任用吴起,罢斥疏远的公族,节省钱粮供养战士,南平百越,北却强敌,楚国一时兴起。楚悼王一死,楚国贵族转攻吴起,尽废新法,楚国因此未能实现社会制度的转变,始终是一个奴隶制国家。楚国实力因而每况愈下,终被秦灭。楚国土地非不大也,人口非不多也,国力非不强也,只因抱残守缺,不仅未能统一中国,反被他国所灭。所以说楚之亡在于制度,因为楚国落后的制度阻碍了中国的进步。
因为齐燕两国不足为患
在秦灭六国进程中,齐一直作壁上观,是秦远交近攻政策执行最好的国家,一直到最后灭亡也没有作好战斗准备,简直窝囊到家了,这样一个国家秦国自然乐得放在最后
燕在太子丹谋刺秦王失败后就被秦军大肆进攻,国土沦陷小半,军队丧失大半,唯一有雄心的太子丹被燕王喜砍了头颅向秦求和,既然燕国已经丧失进取力量,剩下的国土不仅贫瘠无比,而且寒冷偏远,为了不耽误统一大业,暂时被秦放了一马
楚国是秦统一进程中唯一的劲敌,第一波秦军二十万在楚国全军覆没,秦王又尽起全国甲兵六十万,费尽全力方灭楚,然而楚地在六国中最为不稳,“楚虽三户,亡秦必楚”广泛流传,最终楚地豪杰项羽起兵,三年灭秦
楚国既灭,秦不费吹灰之力顺手灭燕,对齐形成了三面包围,之后轻松灭齐,完成统一大业
综上所述,楚虽然早于齐燕灭亡,却并非国弱,相反,楚国是六国中潜力最为可怕,也是唯一在统一战争中对秦取得歼灭性胜利的国家,也是秦灭亡得最为艰苦的国家,齐燕后灭不过是战略选择,真正实力和战争中的表现远远不能和楚国相比
因为楚国是秦国的强敌,所以也就成了秦国最主要的攻击对象。而燕国太弱齐国没有野心,对秦国的威胁都不大,所以秦国先灭楚再收拾燕齐。
啊啊啊,真的就是“喜欢就要爱护”的答案,打了好久一看,擦!这哥们才是正解。好吧,支持那哥哥
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