Problem with geolocation

Hi,

I'm a total newbie. I'm not sure if the title is right but I have the following problem.

I have a wordpress website with some CPA offers. Some of them are strictly for the US market, so are only visible when someone from the US sees the website. People located in Europe, for example, are automatically redirected to a quizz page.

What should I do to redirect people not from the US to a different CPA offer for their geolocation?

Thanks