Memes

Europe I'd say

Sorry to say but the battle is never won there, it's a constant fight to gain and maintain rights for as many people as possible.

And to stop authoritarian rules based on faith tradition.

For this question it's important to understand that there are positive and negative rights, a positive right might give you the ability to do something like shoot a gun, a negative right might be a right that forbids killing you, both are very important and are often in conflict with one another.

Knowing this a 40h work week and paid vacation of 5 weeks is a negative right forbidding your employer from exploiting you for more than that time. On the other hand social security and similar things are positive rights allowing you access to resources where otherwise you wouldn't have any/enough.

Keeping this in mind and assuming that economic rights are generally the most important for freedom under a capitalist system, because fundamentally almost every positive right you want to use also requires you to have money. And assuming freedom is greater if more people are reasonably free than if few people are completely free.

wealth Gini

Europe I'd say.