1) Us History
Short history (1776 to present)
Funny since they themselves were Britishers
Only important presidents are always stressed upon by the examiner
One can score fairly well (Except 2018 results that was a disaster)
Can help you in political science paper 2 (For US political system)
Can be covered in a matter of 15 days

2) Public Administration
To the point
Too much definitions but still can be covered
A bit of ratta required
one can score well in it
Can help you for administration related essay and PA/CA questions

Regards,