The European custom of wearing such a ring has spread widely beyond Europe.
Having new clothes for Easter had deep roots in European customs.
However they were ill-fitted with their Spanish language and European customs.
Wayuu children in the orphanage were educated with traditional European customs.
Myrtle in a wedding bouquet is a general European custom.
Neither had taken to the European custom of allowing the ladies to withdraw while the gentlemen remained at table.
"It goes very much against European custom, and against the short history of the bank."
Asked by the queen and the king's mother, she talked a lot about European customs with them.
During the last 40 years, European customs has done its best to work efficiently together like one single administration.
In 1998, fans complained about the use of kilometers, which was seen as a European custom.