I’m pretty sure the answer is B. Lenin
Yes, it is true that linguists do not know for certain how language was developed by early humans, but they're able to determine that it started somewhere in Africa, due to human migration patterns.
1. I would say Beneficial because when he discovered the "west Indies" he brought back much treasures and gained spain lots of territory.
2. It would have been different because he could've just asked another country or he could have gave up and someone else might have found the new world.
3. This question is up to you...