Yes. The use of these terms is considered etiquette.
It has always been considered poor etiquette.
yes
Actually no. It is considered bad etiquette and players can ask for sanctions against you in tournaments for abuse of general etiquette.
If the burial is private in Switzerland it considered proper etiquette to publish the obituary after the funeral. If the burial is to be made public, the proper etiquette is to publish an obituary a few days before the funeral.
No
Common unspoken rules. For example: ALL CAPS IS CONSIDERED YELLING>
He is considered Russian because he was from the Siberia area of the Russian empire.
The Russian Bear is considered the national animal for the Russian Federation.
No, Russian is not a race. It is a nationality or an ethnicity, referring to people from Russia or of Russian descent. Race refers to a classification based on physical characteristics, while nationality or ethnicity refers to cultural or geographical identities.
Strangely enough- no. Etiquette is a set of rules for behavior developed in a given region- and they can vary from region to region. What is polite in one area may be very impolite in another.
Yes. Very.