Doctor Who: 10 Major Ways The Doctor Affected Human History
4. Ensuring That Magna Carta Was Signed
Sometimes, the Master doesn't really have a deep motivation for carrying out their evil schemes. Sometimes, they just want to cause chaos for the hell of it.
That's exactly what he's up to in the Fifth Doctor serial The King's Demons, in which the Doctor, Turlough, and Tegan arrive in 1215 England and discover that the Master - with the help of everyone's favourite creaky android, Kamelion - is plotting to sully King John's name so that Magna Carta will never be signed.
Magna Carta is one of the most important documents in British history. It did a lot of good, such as helping to protect church rights, giving people the right to a fair trial, and also ensured that royalty and the government were not above the law. Hundreds of years later, its impact can still be felt.
Needless to say, it it hadn't been signed, our society would have progressed in a wildly different and possibly much more damaging manner.
Thankfully then, the Doctor was in our corner. This was hardly the greatest scheme the Master has cooked up, but it was nonetheless an important victory in preserving the correct course of history.