The house of York is the white rose and the House of Lancaster
Edward IV ruled England for 10 years then Henry VI became king for a year then Edward builds up army and defeats Henry. So Henry was killed
I think that Richard the lll should be guilty because he wanted to be king so he killed the twins so he can be king.
Henry Tudor won the Battle of Hastings
Henry Tudor didn't have a good claim to the throne.
Henry Tudor married Edwards daughter so they combined houses.