netherlands without doubts, visitted once, very friendly, open and peacefully country for everyone of any religion or country
I agree one of the friendliest and welcoming places I've been. The people are awesome. But in their history, they did conquer and colonize many parts of the world
https://en.wikipedia.org/wiki/Dutch_Empire.
The Dutch were also famous for their role in the Atlantic slave trade. Along with the Arabs, it were the Portuguese and the Dutch who shipped the maximum number of slaves from the African continent. The others, such as the Spanish and the British, were late entrants to the scene.