Can DNA Tests for haplogroups.give historical answers?

haplogroups can give us A LOT of answers, but also raise a lot of questions. What haplogroups however can not do is giving as detailed answers as you ask for. This would be possible if a population would live on an island without outside influence for a hundred generation (or better more) but does not work on a continent with frequent migration, wars, ... and other stuff that causes genetic mixup such as europe.