Questions About Orthodoxy: Different than Catholicism?

This video answers the following questions posed to me:

-What are the mains difference between the Orthodox Church and the Roman Catholic Church ?

-You seem to believe that the Orthodox Church is the only true Church on earth. Why?

I am an Orthodox catechumen, so my answer may not be perfect. Also, my responses are not prepared. If you think clarifications are necessary, please comment.

Видео Questions About Orthodoxy: Different than Catholicism? канала Orthodox Christian Theology