Can you give me an example about cross cultural communication?

It's any form of communication that well, crosses a culture. For example, you can take US Embassies communicating to the locals; A sales rep for a worldwide company trying to sell product to a different country, etc...

An example we've all seen is in the movies where a group of Japanese businessmen are bowing to a group of American businessmen who all have their hands out in an attempt to shake.