Which best describes the significance of the Treaty of Tordesillas?

Question

It was the first time in world history that two European nations declared peace with the Ottoman Empire without the Catholic Church’s consent.
It was the first time in world history that two European nations sought a third party to mediate a dispute regarding foreign lands.
It was the first time in world history that two European nations collaborated to arrange a peace treaty between warring African tribes.
It was the first time in world history that two European nations agreed to claim and share the same piece of land.

D?

Answer 1

I disagree.

https://www.nationalgeographic.org/thisday/jun7/treaty-tordesillas/

Answer 2

Ok i will read and get back to you

Answer 3

hint:
Why do they speak Portuguese in Brazil but Spanish in the rest of South America?

Answer 4

Would it be D?

Answer 5

Never mind. I get it now