Until very recently the USA was the preferred technology partner for many EU ventures and was seen as a trustworthy ally because of mutual history since 1945.

> If you talk to a European as an American they often have a lot more dislike for each other.

A lot more than what? And what exactly did Europe do in recent times that would give American citizens that feeling?

> It hasn’t been a century since they tried to genocide each other

This is a complete nonsense statement.