What was Curzon's mistake​

Just before entering Oxford in 1878, he was struck down by a devastating pain in his back, the aftermath of a riding accident of four years

In 1921 Curzon was created Earl of Kedleston, in the County of Derby, and Marquess Curzon of Kedleston. In 1922, he was the chief negotiator for the Allies of the Treaty of Lausanne, which officially ended the war with the Ottoman Empire and defined the borders of Turkey.

i think that the right answer is the aztecs