Lots of things. Not shaking hands, for example, and especially not at least attempting to address the locals in their own language.
Punctuality is a quality for most French. It is considered rude to let people wait for you. We used to say "la ponctualité est la politesse des rois" (punctuality is the Kings' politeness).
Yes, of course you can. [although some ladies may think it rude to ask]
France
"The Thinker" by Auguste Rodin, "La Marseillaise" by Rude (on the Arc de Triomphe), the Milo Venus displayed in the Louvre museum are very famous statues.
No Homer is not rude he is simple minded
what's the considered rude or polite of Greenland
It's considered rude everywhere, not just Germany.
Asking someone for their pronouns is not considered rude; it shows respect for their gender identity.
its not considered a swear, but it is considered disrespectful and rude,
it very rude to give people in France things that have the number 13 in it
It is considered rude not to try to speak a little Spanish (even though many Spaniards - especially in tourist areas - speak English). It is also considered rude for American tourists to wear shorts along with loud colored (e.g. Hawaiian style) shirts. It is considered rude to speak loudly in close quarters. It is considered rude not to provide a tip to those in the travel, entertainment and hotel industries. And there are many, many more examples.
Yes, it is generally considered rude to read a message and not reply, as it can be seen as ignoring the sender or not valuing their communication.
No, it is not considered rude to ask someone their pronouns. In fact, it can be a respectful way to show that you value and respect their gender identity.
In some cultures, it is considered polite to say "bless you" when someone sneezes, but it is not necessarily rude if you choose not to say it.
Yes, eavesdropping is generally considered rude in social situations as it involves listening in on private conversations without permission.
whispering in their ears!
rude