For Year 12 History Transition work
England 1445-1509 (The War of the Roses)
Read the series of books called the Cousins War Series by Philippa Gregory– especially The White Queen, The Red Queen
For the USA in the 1800's
research about how the American political system works and what are the 3 branches of government?
Also investigate what happened in the American Revolution
What is the American Constitution?