First of all you have to decide what you want to do. Which subject related career will you be interested in or you are good at. History, Political Science, Geography and English are your subjects so if you are interested in teaching you can do BEd.
If you want to become a journalist, you can do a diploma course or a degree course in journalism obviously you should be interested and have a flair for writing.
If you are interested in geography and want to become a geologist and specialise in that subject.
if you are interested in building a career in Political science and history- higher studies on the same needs to be done first.
So the choice is yours.