Can't understand the topic Yahoos vs Europeans...!!!

plz Explain.

The explanation of Yahoos vs Europeans is as follows:

After hearing to Gulliver's description about the Europeans, the  Houyhnhnm master points out the similarities between the  Yahoos and the Europeans. Further, the master distinguishes Gulliver from the Yahoos due to his cleanliness and learning capabilities. The master also tells Gulliver about the ruling Yahoo.