Russia. Yandex search engine(native) and google.
I think you meant "South America" in your title. But in North America, it's overwhelmingly Google.
It is possible to search on the internet for a list of "the countries where Google and its allied services are wholly or partly banned or rendered unavailable".
One can do the same to see where Twitter, Facebook, YouTube ... are banned.
i dont think i am unfree at all. so, i cant think of which are the unfree counties you indicate. And I comfess i am upset.
it is ur right to express what you think, but i am entitled the right to ask.
Using your power of logical deduction, and reading what I wrote, what do you think? It is quite clear, isn't it?