How did Richard III become king?

Answer:
As The Royal Protector for his underage nephew King Edward V, he then had his two royal nephews (Edward and Richard of Shrewbury) imprisoned in The Tower of London for protection, where they mysteriously disappeared. He then proclaimed himself King.
First answer by Mistress of Chaos. Last edit by Mistress of Chaos. Contributor trust: 32 [recommend contributor recommended]. Question popularity: 1 [recommend question].