Language is not the only issue. But consider this if I meet Catholics from any other country we have a common language, and common ritual to unite us. One that does not change according to culture.

It was a moving experience when I was in Krakow and the Juventutem group that compromised several different nationalities and ethnicities could pray together without knowing any of our languages. It was miles away from the general crowd where each group proudly waved their nations flags. That to me seemed more divisive. Indeed each nationality had specific times at the different churches for worship, whereas our group was always united.