C makes the most sense because the TFR is an average of how many children a woman can produce. Naturally, the higher the number of children the women in an area produce, the faster the population will grow. If the TFR were lower, there would be less babies, slowing the population growth.
I'm pretty sure he defeated the allied of john, holy roman empire Otto IV, and the count of Flanders in 1214....if I'm not mistaken I remember learning about this.........hope it helps :)
