Line of Demarcation is Treaty that divided the New World in two

The Treaty of Tordesillas (in Portuguese: Treaty of Tordesilhas) was the commitment signed in the town of Tordesillas - located in the current province of Valladolid, in Spain - on June 7, 1494, [1] between the representatives of Isabel and Fernando, kings of Castile and Aragon, on the one hand, and those of King Juan II of Portugal, on the other, under which a distribution of the navigation and conquest areas of the Atlantic Ocean and the "New World" was established "through a line located 370 leagues west of the Cape Verde Islands, in order to avoid conflict of interest between the Hispanic Monarchy and the Kingdom of Portugal. In practice, this treaty guaranteed the Portuguese kingdom that the Spaniards would not interfere in their route of the Cape of Good Hope, and vice versa the former would not do so in the recently discovered Antilles.