古代皆是掌权者追封父辈为皇帝，为何李治却要追封儿子当皇帝？
推荐回答（1个）
众所周知，在古代，没当上皇帝的太子实在是太多了，对于皇权至上的古代，太子死了那就只能重新在立，而这位太子也就只能是太子。就如朱元璋的儿子，朱允?傻母盖字毂暌话悖?煸?霸谑赖氖焙颍?毂暌恢倍际枪易盘?由矸荩?钡街煸?杉涛缓蟛沤?涓盖字毂曜贩馕?实郏?敲次?裁蠢钪位嶙龀鲎贩舛?游?实壅庋?氖履兀?/p>
这位被追封为皇帝的正是李治的第五子，武则天长子李弘。李弘也是由于受到母后武则天的努力之下才能得到这个太子之位，凭借着李治对武则天的宠爱成为皇后，李弘自然也就顺理成章的成为了嫡长子被立为太子。不过这位太子也是深得皇帝李治的喜爱，曾对大臣们直言不讳的说出对李弘的评价“仁义孝顺，待人接物合乎礼节，从未犯过错误。”
小时候曾经有一次向郭瑜学习《春秋左氏传》，在这里面他看到了一篇为了权利儿子将父亲杀死的故事，李弘就忍不住感慨的询问老师，为什么这种罪行昭彰的事写在这里面，这岂不是会教坏后世？郭瑜就解释说，善与恶写在一起，就是为了扬善抑恶。李弘接受不了这样，便接受了老师的建议开始看起了《礼记》，皇帝知道后更加认定了李弘仁德之心。
长大成人的李弘开始更加展现出了他仁德贤明的一面，已经身为太子的李弘，皇帝李治便有心想要锻炼李弘的能力，再加上那时候李治的头疼病也日益严重，也就让李弘直接监国起来，当时正赶上关中地区遭遇旱灾，闹饥荒。李弘听闻后直接赶出去为赈灾事业做贡献，也正是在此处听闻了一件让他死于非命的事。
当时李弘有两个同父异母的妹妹，也就是义阳公主和宣城公主。她们的母妃也就是萧淑妃，早年得罪过武则天，等到萧淑妃死后这仇怨也就转移到了两个女儿身上，被武则天一直幽禁在了宫中，这一关就关押到了两姐妹二十多岁。李弘知道这件事后，对于自己母后所做的事感到震惊，也对两位妹妹的遭遇很是同情，便向李治求情想让她们能够出嫁。
李治对于这件事欣然同意了，但这件事同时也激怒了武则天，认为儿子李弘胳膊肘向外拐。武则天虽然迫于无奈的同意了，但她却将这两姐妹直接嫁给了侍卫，也是因为这件事武则天也开始疏远李弘。675年，李弘与李治、武则天一同前往合璧宫的时候，突然暴毙身亡。
对于李弘的死因有很多种说法，最多的就是武则天毒杀了他，认为李弘如果当上皇帝，武则天不能做到掌控李弘，并非是一个好的傀儡皇帝，所以才将其毒杀。还有一种说法是贺兰敏月下的毒，另一种说法是指李弘本来就体弱多病，才导致最终死亡的。
李弘的死对于高宗李治无疑是一个很大的打击，李弘是李治最满意也是最理想的皇位继承人，已经在不断的为他铺路为了更好的继承皇位，却让李治最终成了白发人送黑发人。悲痛万分的李治决定叫他的儿子李弘追封为“孝敬皇帝”，准备下葬于恭陵，安葬的礼节全部都是按照皇帝的规格来操办的丧事，可见李治对于这位太子李弘是有多重视，而李弘也成为了唐朝唯一一个被父辈追封为皇帝的一位晚辈太子。（喜欢这篇文章的点个赞、关注一下呗~笔者在此先感谢大家啦）
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