Bottling for European markets vs USA

[jgrodman]

well i am not a "wine drinker", i recently spent several weeks travelling through Italy. We would typically drink wine both at lunch and dinner. I enjoyed every bottle, regardless if it was white or red. When i returned back to the USA, i noticed that i didn't like the flavor as much. Is there a difference in how wines are bottled for the US market? Are there additional perservatives added for US bottles? Trying to make sense of why the different taste.