The American Civil War ______ in 1861 and it _____ to an end

efore
美国内战最后以北方胜利结束
所以 战争的持续发生在结束之前 选 before

There are historical reasons for their misunderstanding of the issues,some of which can be seen during the Civil War itself.Some of this confusion has come from the notion that the North's PURPOSE in entering the war is the same thing as the REASON for the war.But why do they have to be the same?Wanting to restore the Union with slavery still allowed hardly disproves that the disagreement about slavery was what CAUSED secession and thereby the war.In fact,most of the Northern efforts before the war to bring Southern states back focused on assurances about the protection of slavery (esp.the Crittenden Comprmoise),demonstrating that they perceived this as THE key issue.

内战时期,谁是总统
希望可以帮到你,有不懂的还可以问我^^

考查名词性从句,本句为主语从句：That the American Civil War broke out in 1861 is known to many of us.=It's known to many of us that the American Civil War broke out in 1861.

如果用过去完成时也可以吧,不过我认为应该是这样：The American Civil war had lasted for four years before the North won in the end.
一点拙见

不可以,then当然后讲是副词,如果加一个and,then从语法上勉强说得过去,但意思不对

American Civil War was started in 1861 and ended in 1865

during the american civil war,american red cross founder Clara Barton ministered to soldiers on the battlefields,at Antietam,|||so close was she to the actual fighting that a bullet pierced her sleeve.我在原句加了“|||”你看一下：英文中两个陈述句之间得要连词,要么是并列句,要么是主从复合句,而中文直接将两句话用逗号一连即可.A项将原句改成-ing分词作状语但我觉得你是否多抄了什么词,应该是"battlefields,being so close to the actual fighting [at Antietam]",也就是将后一个so去掉,即“so close that a bullet...”如此之近以至于一颗子弹穿过她的衣袖.如果不用-ing作状语,则[1]During the american civil war,American Red Cross founder Clara Barton ministered to soldiers on the battlefields; [at Antietam,] so close was she to the actual fighting that a bullet pierced her sleeve.[2]During the american civil war,American Red Cross founder Clara Barton ministered to soldiers on the battlefields,AND [at Antietam,] so close was she to the actual fighting that a bullet pierced her sleeve.还有到底是她在Antietam还是actual fighting在Antietam,这儿不清楚,所以Antietam这个地点不好放.
若能确定"Antietam"这个地点,也即史实告诉我们是：她在Antietam这个地方遭遇子弹穿袖,那么应该是B项正确.