Answer:
To get rid of slavery or in his words to destroy it
Lacking food and ravaged by smallpox disease earlier introduced by one of the Spaniards, the Aztecs, now led by Cuauhtemoc, finally collapsed after 93 days of resistance on the fateful day of 13th of August, 1521 CE. Tenochtitlan was sacked and its monuments destroyed.
The losses in the Middle East were staggering: the war not only ravaged the land and decimated armies, it destroyed whole societies and economies. In this way, the experience of World War I in the Middle East is perhaps more akin to the experience of World War II in Europe.
