句子翻译What of the Southern leaders,all of whom were liable to

这是95年托福全真阅读题之一。说的是美国南北内战结束后联邦政府所面临的一些问题。上下文如下Other important questions needed answering。What would be the future of the four million black people who were freed from slavery?On what basis were the Southern states to be brought back into the Union?What of the Southern leaders,all of whom were liable to charges of treason?-----------------------------------------What of the Southern leaders,all of whom were liable to charges of treason?what of是省略句。全句应该是：What would be the future of the Southern leaders,all of whom were liable to charges of treason?词汇点be liable to 该受(罚),应遵守。。。,有。。。的倾向,易于。。。charges of treason叛国罪指控翻译为那些全部都可能会受到叛国罪指控的南方领导人的未来会如何呢?（备注：All the leaders were finally pardoned by President Johnson in 1868所有这些领导人1868年都得到了当时美国总统约翰逊的特赦。）