Translation of usurpación

In England, a man would still open a door to a woman, but in other countries this habbit is less common. In a way, habits that existed hundred years ago slowly loose their meaning and importance.
The place I have been to is famous for its many language schools. People come from all over the world to learn Spanish and practise their language skills. I guess there are more than two hundred schools there.
I was surprised that he charged 5 dollars extra (a total of fifteen instead of ten), because he had to take us to three different locations. I did not buy the whole thing and gave him ten bucks.