How should I format policies for US and EU customers on my first webstore?

[NielsKeijsers1]

Hello,

I'm working on my first Shopify webstore and I'm struggling with the question: how should my policies look when planning to sell my products in the US and the EU? 
Its a dropshipping website so its possible for me to let people from all over the world buy my product because there are multiple shipping options such as US and China.

There are differences in the EU and US policies for returning, privacy etc etc, I really wonder how my policies should look like due to the differences, do I have to have both US and EU combined, or should I separate the policies and place them both there underneath the other.

I hope someone can help me with this! 

[Ufrancis84]

How much precisely do one has to pay for international shipping to EU and Canada?

[NielsKeijsers1]

I don't know yet, I'm just wondering how to apply the policies when there are multiple countries I'm  shipping to, not every country has the same rules for shipping and returning as an example.