Do you still need help?!?!
B.......since he was the head of the house of Lancaster in the War of the Roses; defeated Richard III at Bosworth Field and was proclaimed king; married the daughter of Edward IV and so united the houses of York and Lancaster.
Assuming that this is referring to the same list of options that was posted before with this question, <span>the correct responses would be "new information comes to light" and "old theories are discredited". </span>
